I've been having trouble learning how to upload a profile/signature/avatar picture.

I'm trying to upload a profile picture that moves and keep getting the error of "Invalid File". What I don't understand is, what type of file type does my animated picture have to be to work? (Animated from flash)

It needs to be in .gif format. Even I knew that.

Only if you want an animated avatar/signature use gif

If you only want a picture static, use a png format, that's the best for quality pictures

The best thing to do is to just put it in with BBCode rather than trying to upload it to the SIGPIC thing. Upload to fileize.