Answers:
No. If the computer have the virus next unless you verbs the profile next to the virus on it after it will not achieve the xbox.
Also, the virus would be adapted for the PC and wouldn't do anything on the 360.
your xbox live will not get hold of a virus, as it does not chitchat to your PC, one and only your router or modem.
you can jump to
http://housecall.trendmicro.com/... for a free online virus scan software. if you'd approaching to download one to your PC, i recommend Avast! Home Edition, it's free and works better than McAfee or Norton.
The singular opening that your xbox can take the virus is if it is present within the meet people you'll be using your xbox for. and anyway near are thousands of free and pricey option for virus removal although some are massively tricky to remove..
(you should never walk on to the internet in need antivirus on... window firewall and supporter are not devout enough)
If you hook the XBOX up to your PC or MAC afterwards it is (highly unlikely but ) possible that the virus could be transferred... since your xbox does own a harddrive contained by it...
However, this depends on what type of virus your computer is infected next to and what operating system your xbox is running... xbox runs on powerpc architecture but at hand are also xbox linux OS out nearby too.
There is already some virus on xbox that can be sent thru friend request...
Highly unlikely but possible...
righteous luck.
No, because your xbox don't certificate the files that we enjoy on notebook. Even the folder fence is different.