ok go to Photoshop.com create an account. then go into your account and then click choose files then find your pictures where ever you put them select them then click open.
then your picture files should show up in the box to the left of the "choose Files" tab then they should just upload by themselves when they are done then it will bring up another webpage showing the files you have just uploaded you dont have to do anything here so just click Return to Album then you should see your pictures in the area below scroll over them.
then you should see a box pop up go down to the IMG code copy that code and then paste the code in to your FPSC forum post then after u click post message it should show up in your post.
hope that helps.
and an even easyer way is to make your image .jpg you can do that by opening them in Paint and just save as a .jpg once you have your image as a .jpg. then in your post box you should see a section that says Attachment click the browse... button to the right of it find your Image then just click open you should see the image in the box and then just click Post message and you should see 2 boxs below your post that say open(I think) and download that is ur image.
Just make sure your Image is In .jpg format