Calibrate your monitor.  Best to use a hardware solution like the ColorVision
Spyder II or similar.  You can also use Adobe Gamma in a pinch.  Then, use a
color corrected workflow with tools that are aware of color profiles, like
Adobe Photoshop (or Elements) or Paint Shop Pro or similar.  See if that
doesn't solve your problem.  

A typical workflow is to shoot in RAW (perhaps using AdobeRGB as your
colorspace), process in Camera RAW ... process further in Photoshop or
equivalent and finally convert to sRGB for publishing to the web.  There are
as many workflow options as there are digital photographers, so it is best you
do the research and use what works best for you.

I recommend this book if you want to get deeper into this.  

http://tinyurl.com/wtdbr

If you only use your photos recreational, then colormanagement is a
bit heavy tool. Offcourse the Hardware colormanagement does give
the best tuning, but I do not think this is neccesary.

So first try to analyse why you do have a red hue.

Possible causes :
1. Indoor pictures with artificial light.
2. Outdoor pictures with sunlight early on the day and late in the evening.
3. Wrong setting of the white balance.
4. Wrong adjusted monitor.
5. Serious error in the camera.
6. ....
7. ..

To find the problem, try to make a 'fairly' normal picture, with white
balance
on automatic, outdoor during the day. If sunny make pictures in the sun and
in the shade. Also make some indoor pictures and some pictures using the
flash as a mainsource.

Try to view these pictures on different monitors. (Friends and work).
(It could be that your monitor does give a red hue so try different
monitors.)

Most pictures should not give a colorcast or a red hue.

If the red hue is there on different monitors and for all your pictures
(outdoor,
flash, indoor) and you used the automatic whitebalance, then I think there
is something serious wrong.

Finetuning of the above, you could use the white balance setting which is
appropriate for the setting, see what this delivers.

To sum it up :
(1) Analyse the problem and then (2) find a solution which is practical
(cheap and easy to implement).
If this fails, it could be that you have a serious error in the camera.

good luck, keep us informed how you progress.

ben brugman

Take a picture. Upload it without editing. If it's red, then the web
site is to blame.