Whenever I load up Dolphin it changes my resolution to 640x480 and I need to go into the Nvidia control panel to fix it. It is very annoying and I don't know to fix it :\
Go to graphics option in dolphin and change the resolution.
You haven't told us what was wrong. What were you trying to fix? What was the problem?
It isn't the dolphin resolution that is the problem. It actually changes the resolution of my computer's display (not just dolphin) to 640x480. 'fullscreen resolution' is set to 1680x1050 and changing the internal resolution doesn't do anything.
Try the latest revision and try an older revision like 6970. See if it's a problem with all revisions or just certain ones.
Which revision did you use?