> 1) Could I dual-boot XP and Linux? (I have a dedicated 25GB partition I plan
> to use for the Linux install).
yes its not hard to do
> 2) When using Linux, can I access the other partitions I made when I
> installed XP?
i think you can. like cant open the apps usually.. but yes you should be able to.
Does the partition have to be a certain format? (FAT32/NTFS)
you mean the partition you want to access from linux? no
> 3) How safe is Linux from spyware/adware? Do I need an
> anti-virus/anti-spyware?
no you dont. its very safe.
> 4) Do you think it's safe to plug in USB flash disks and memory cards
> knowing full well that they contain Windows viruses? Won't the Windows
> viruses have some effect on the Linux install?
i would think not. but i could be would be possible i suppose... maybe
> I've downloaded the most recent version of Ubuntu (7.10 I think). Do you
> think this is good for a noob like me?
yeah ubuntu is the best

easy to use