anti-virus Software for EP5 SP5

Hi,

can you tell me, if there are restrictions for implementing and using anti-virus programms running on an EP5 SP5 NT-Server ?

Or can we use all availability software like - for example MC Affee ?

Another thing:

Is there a procedure with EP 5 SP 5 (or with EP 6) available, to ensure, that only virus-free Content can be uploaded in KM ?

Regards

Tom