I heard that there was a way to upgrade the ram on an htc mogul by purchasing a module from this site
http://www.pocketpctechs.com/main.asp?area=home and soldering it in. There isn't anything on this site about the mogul upgrades, The person of whom completed this mod told me to go to ppcgeeks and find the thread on this topic. Hopefully you guys can give me some insight on this project, or a link to the thread, sorry I couldn't find the thread...