Microsoft http://support.microsoft.com/default.aspx?scid=fh;EN-US;KBHOWTO

Novell http://support.novell.com/products/psMenu.jsp

Computer Associates http://support.ca.com/

Citrix http://knowledgebase.citrix.com/cgi-bin/webcgi.exe?New,KB=CitrixKB

HP http://www.hp.com/country/us/eng/support.htm?cc=us

Compaq http://h71025.www7.hp.com/support/home/selectproduct.asp?destination=ask

Mcafee https://mysupport.nai.com/login.asp

Norton http://www.symantec.com/techsupp/enterprise/

Dell http://support.dell.com/us/en/search/kbadv_search.asp

Sony http://www.ita.sel.sony.com/support/