Supereasy way of putting stuff into the GAC
As a bizTalk consultant you have to use the GAC a lot, I used to start a VS2003 commandprompt and browse to the folder containg the file and then use gacutil, or just drag the file into the Windows\Assembly folder. There is an easier way of doing things. How about Right click on a file and have the option Add to GAC......
Have a read here of how to do this. (just adding some registry entries)