That's probably more than adequate for eBay pictures, but compared
to your SLR you may be very disappointed by quality of the travel
pictures it takes as well as how it takes them.  For example, most
older, cheaper digital cameras have a significant delay between the
time you press the shutter release and when the picture is actually
taken, so you may not get what you want when taking pictures of
moving objects.  For learning to use DCs it's probably ok and will
also allow you to not only familiarize yourself with digital camera
and their quirks, but computer software as well.  Then, in a year or
three if you feel like it's time to get a better camera, you'll be
more knowledgeable and in a better position to avoid making costly
mistake choosing the wrong camera with the wrong set of features.
And if you aren't expecting too much from the Konica, it may be good
choice.  If the Konica is used though, I'd want to make sure it can
be powered by inexpensive NiMH rechargeable AA batteries.  If it
uses a proprietary rechargeable battery that may be nearing the end
of its useful life, another battery might cost almost as much as the
camera!

 That's fine.  I generally use Win95 to work with my digital
pictures.  If the Konica is old enough, it may use a serial cable
instead of USB to transfer pictures to the computer, in which case
you'd want to get an inexpensive USB card reader to transfer
pictures to the computer.

This camera won't be very god even for trips.  It will only let you make
fairly small prints.  But it may let you get a little experience with
digital photography that will help you decide on what kind of good digicam
to get.  On the other hand, it might turn you off on digital photography
before oyu see what a good digicam can do.

Digital photography isn't a complete replacement for film photography, but
it does have many advantages.  You see the result quickly, which helps to
learn how to take even better photos.  And since there is essentially no
cost per photo unless you decide to print it, you are likely to take many
more photos.

As for the PC requirements, almost any PC will do for the small image files
from the Konica you mention.  Beyond that, it depends on what kind of image
editing you will do.  Simple steps like cropping don't demand much from the
PC, but affordable software will let you do pretty much whatever you can do
in a darkroom, and quite a bit more.  The more advanced image editors need a
fast processor, lost of memory, and a good display.

For your needs you should get a Point-and-Shoot digital camera -- at
the very minimum 2 megapixel (though you can only really print small
picture). 3 MP would be better. For anything worth taking with you on
your travels, you'll have to spend at least $150-200 for something
good.

You can find reviews of different digital cameras by category (for
example, Budget Buyer, Traveler, Point-and-Shoot, etc), and read what
other camera owners have to say about each camera at:

http://www.Review-Center.com

GREAT VALUE
If price is not as much of a constraint for you, get the Canon
PowerShot A75 3.2MP Digital Camera with 3X Optical Zoom for about
$225. I would say that a 3 MP camera is much better than a 2 MP camera
if you're going to take the camera on vacations.
http://digital-camera.review-center.com/catalog/product.php?ASIN=B0001G6U4S

CHEAPER CAMERAS
At the lower end of the price scale, for about $150 (Amazon price) you
can get the Nikon Coolpix 2200 2MP Digital Camera with 3x Optical Zoom
http://digital-camera.review-center.com/catalog/product.php?ASIN=B0001ARH0U
This is a really good 2 MP camera, though with a 2 MP camera you
really can't print any pix over 8x10 max (and that's pushing it a
bit).

or at about the same price (about $140), check out the HP PhotoSmart
635 2.1 MP Digital Camera w/3x Optical
http://digital-camera.review-center.com/catalog/product.php?ASIN=B0000A602Q

CHEAPEST
If you want a really cheap digital camera that works OK and should do
great for your for your eBay photos, adequate snapshots, etc., for
about $75 you can get the Kodak EasyShare CX6200 2MP Digital Camera
http://digital-camera.review-center.com/catalog/product.php?ASIN=B0000ACXZU

The Review-Center.com site has reviews from other customers, so you
can read through them and see what they have to say about their
experiences with the camera, and the site is quite user-friendly, with
Buyer's Guides to give you the basics.

Regarding your PC and Windows98, most of these cameras should work
with windows98 as long as you have a USB connection. If you'll want to
print photos you can also look into getting a printer that you can put
the camera media directly into the printer.

I had Windows 98 for a long time, and I don't know if it was my
computer in particular, but finally I broke down and bought a new Dell
with Windows XP, and I have to say that computing is SO much less
frustrating now that I have a more up-to-date system.

Maybe next purchase can be a new computer! Dell often offers special
deals on computer/monitor packages. I got mine with a Pentium
processor, CD RW, etc. for only $399 + a nice little 15" flat panel
monitor for an extra $200.
Hope this helps!

-Scott