Ive just become the owner of a brand new AGP 256Mb 6600GT. 
I currently have a GeForce 4.
Both cards are nvidia so do I just take one card out and put the other in and thats that? I presume they use the same drivers as they are both Nvidia.
Or will it be better for a full reinstall ?

I currently have a GeForce 4.
Both cards are nvidia so do I just take one card out and put the other in and thats that? I presume they use the same drivers as they are both Nvidia.
Or will it be better for a full reinstall ?