Iotimal Toad set up for win7 64 bit, oracle, and vertica

I have several of my users upgrading their PCs to 64 bit Windows 7 and almost all of them are having trouble migrating Toad.

If they have a “clean” 64 bit win7 system, what versiopn of TDP should they install? Should they install 32 bit or 64 bit Oracle and Windoes drivers?