I know caution must be exercised when granting programs permission to act as server,
that they should be "trusted" but can you please tell me if antivirus/antispyware
programs should come in this category?

I am running Avast 4.8 Pro,Malwarebytes,Superantispyware and Spywareblaster.

Also, should I give my ISP server rights?

At present,I have only given server permission to svchost.exe.

Grateful for any forthcoming advice.

Cheers, GypsyDavey