Go to www.photobucket.com And from photoshop make sure you don't save it as a PSD and save it as a bmp or png.
Go to File<Open Then find your folder and double click on a picture to open it... and make sure the dropdown list is selected on .gif, .jpg, or .png whichever you need..or any other file types you need but those are like the top 3 used
Hmm..thats odd.. Does the Open window even work? If so when you get there did you try changing the dropdown list of filetypes? How exactly is it not working..