Vista format and old viruses

I have been looking into 2 things which I have always wondered about.

When we do a clean Vista installation we get the format option but is a quick one and no option for a full format.I have googled round and not got much positive back on this.I read it may be possible to do a full format through a command prompt on the Vista dvd's recovery/repair section.Lol one post said a full vista format writes 0's to the drive,so finding if you can do a full format in vista is tricky.

Also I always wondered about old viruses/trojans on formatted drives as formatting doesn't wipe drives so in theory the viruses are still there.So to make sure maybe a low level format or something like a sweep using Dareks nuke and boot should do the trick.
Any thoughts or views on this?

Viruses are only a worry if they get loaded and executed. I wouldn't be too concerned about remnants after a quick format.

Regards,
Steve

as sjr says, the viruses are as good as (and I really do mean as good as) gone, there is no need at all to zero the drive because of viruses

I agree with the two previous comments.

Just for info though, boot to the Vista CD and choose your language settings.

DO NOT choose Install on the next screen, choose Repair Your Computer in the bottom left corner.

Click next when asked and you then get to the Vista recovery options, choose command prompt.

Type in format c: /x /u /FS:NTFS

The /x will force a dismount and /u will run an unconditional format.

Seriously, thanks so much for this command line advice - I've been trawling the internet to find some help like this for ages!