As far as drivers
go, the Windows 7 installer is nearly driver
-complete. MS funded the partnership (WHQL) with manufacturers to develop Windows 7 drivers, so they have them all first.
Any specialized drivers which don't show up can be found on your model's support downloads page, or by Googling.
You may also be able to find any missing drivers by browsing from Device Manager driver tab to the recov disks you have for Vista, or if that is a Windows 7 recov disk (and not just a clean copy of Windows 7) they may be discoverable on there, too.