Tried to install Mcafee 2004 on a win 2003 machine and it spit the cd back out at me, reckon 2005 should work?
Even current versions of McAfee's virus scan software require Win 98/ME/2K/XP as per http://us.mcafee.com/root/popup.asp?path=/common/en-us/popups/vs/sysreq.asp
Most vendors will prevent you from install standard (consumer oriented and consumer priced) anti-virus software on a server operationg system such as Win 2003. You would need to look at one of McAfee's enterprise solutions or a similar product from one of their competitors.
norton corporate 9