I have the free version of limewire and everytime I connect, a pop-up appears asking me if I want to go to limewire pro. Is there a way to make that pop-up disapear meaning that it won't show up everytime?

hehe--get Pro?

There isn't any way to click a checkbox or anything like that, though. LW is open source, so you could just build your own from www.limewire.org

However, the $18 is pretty little to contribute to the project to keep it developing, so the best way (even if you are expert enough to build and modify the source code), is to be a supporter and donate to the project through the Pro option.