Best and easiest network virus software?

Hi,

we have an all-NT network, 1 server and 20 workstations. we use Network Associates virus software on both, but the updating of the software, virus patterns, and scan engines is not as automatic as i think it should be.

the question is:is there some good virus software out there that autoupdates itself easily, regularly, and reliably?

thanks for your help!

fred
fred@natural-law.org