Use Mozbackup for FF. It also backs up Thunderbird email if you use that. link text
I use WinPatrol free and Avira free.
Don't pay for more AV if part of the bloatware on new PC, ask for discount. Then contact Kaspersky to transfer license??
Or use Avira/Avast or MSE, at least till you sort Kaspersky out. Don't run without AV.