Welcome to SimV!

Yes. You will have to modify the pics to upload them.

FSX saves screen shots as a bmp format, and you need to convert it to a jpg no bigger than 1024 x 768 pixles and 150kb in size.
For a freeware program that will do the resizing and compressing to 150kb see this thread:
http://205.252.250.26/cgi-bin/yabb2/YaB ... 1223498289For the actual process of uploading and posting pics here, see this thread:
http://205.252.250.26/cgi-bin/yabb2/YaB ... 1225306666