I'm usually pretty computer literate but I can't seem to find how to attach photos. Do I need a special membership to do that?

First make sure you have pictures uploaded to a host site such as photobucket.com or the like.

Then paste into your post the link to that specific picture withing brackets like this.

[IMG] httpwhereeveryourpictureis [/IMG] (but without spaces.

That should do it.

Thanks!