[2005] Switching to Professional Edition

I was using vb.net 2005 express edition but later I have installed professional edition. But my projects are being opened in express edition but I dont want use express edition anymore.
Can I open my projects (developed on exp. ed.) in prof ed.?
If I uninstall express editions, do I lose my projects and can it be harmful to my prof. ed.?

They will open fine in professional. You can uninstall express and just use professional.