Here are links from various sites to help you when you need general or vendor specific information and support:
PC World:
http://www.pcworld.com/
CNet:
http://www.cnet.com/
http://www.download.com/
Microsoft:
http://support.microsoft.com/
HP:
http://welcome.hp.com/country/us/en/support.html
IBM:
http://www.ibm.com/support/us/en/
Compaq:
http://h18000.www1.hp.com/cpq_support.html
Palm:
http://www.palm.com/us/support/index.html
BlackBerry:
http://na.blackberry.com/eng/support/