Edit Image Size on Category Pages

I'm wondering if there is a way to edit the image sizes on product pages or any page in general. On my website, no matter what image dimensions I upload to the category, it resizes it to 100x125 pixels.

Admin - Configuration - Images

Thanks for the help. Do you also happen to know how to remove the black box or border that is around my images? Like in the link below?

http://www.oldewatches.com/designer-hats-##############-gucci-hats-c-916_988.html

I'm supposing it's in the stylesheet.css or other .css file, but I don't want to screw anything else changing something I'm not sure about.

Anyone?

Please remember that everyone here is a volunteer and may not be around every time you have a question or a followup. Often, the lack of response is that more information is needed.
The accepted practice is to try and give us more information about the problem. Also, the original link you posted was modified by the forum's word filter and did not work.
If I get what you are asking, there is a background image defined in your stylesheet.css around line 1251 called prodBg.gif. Remark or remove that call from your stylesheet and the box will go away.
Next, I suggest you look at the creation of a custom template. You have done major modifications to the classic template and they will be lost on your next upgrade.

Yes, made the change and it fixed it. Thanks a lot dbltoe.