RE: TF Contender
Jim,
I had the same problem with uploading pictures in the beginning. The size limit is approximately 200 kb for the picture. Make sure your file size is smaller than 200 kb. If it's too big you'll need to use a graphics utility to shrink the file size.
Generally I import my pictures in Corel Draw and resize them, that's what works for me. Also on RC Universe Support there's a thread titled "Test Posting Forum" where you can experiment with uploading pictures.
Hope that helps
Regards
Mike