Listed below are various PC support and troubleshooting sites that may be of assistance

PC Troubleshooting for windows

http://support.microsoft.com   General windows support site

http://windowsupdate.microsoft.com      Downloads and security updates for Windows OS

http://www.whirlpool.net.au    Discussion forums on various Internet , PC issues

http://www.logmein.com  Great tool for remote troubleshooting across the internet and its free!

PC Utilities and Downloads

http://www.download.com    Assorted Downloads for your PC

http://www.sysinternals.com   Advanced troubleshooting tools

http://free.grisoft.com   Free Anti virus

http://www.tucows.com/  Assorted Downloads for your PC

http://www.spybot.com    Spyware and Malware removal

Wireless Networking

www.ozcableguy.com/wireless.html     Wireless networking discussion

Network Operating systems

http://technet.microsoft.com/en-au/default.aspx   Various windows server products

http://support.novell.com                    Various Novell server products

http://support.citrix.com                      Various Citrix products

Hardware support

http://www.hp.com                             Hewlett Packard

http://www.ibm.com/support               IBM

http://www.dell.com                            Dell