I just bought a EAH4870 replacing my old 7600 gt. to install all i need to do is get rid of the drivers and replace the cards with each other right? then just install new drivers. When removing my drivers i will be using drive cleaner pro.

Is there any better way of doing this or am i right to go?

If I may, I find that setting the Catalyst Control Center options to default FIRST, then use the uninstall tool for the Catalyst drivers you have installed from the add/remove programs list, THEN boot into safe mode and use Driver Cleaner.
This process seems to do well.