Just got Windows XP the other day, so I thought I'd start a thread where we can post our favorite Windows XP sites for things like free software, tweaks, tips, help, etc. Here's my contribution:

<a href="http://www.tweakxp.com" target="_blank">www.tweakxp.com</a> - Windows XP tweaks, FAQ, forums
<a href="http://www.xpsc.net" target="_blank">www.xpsc.net</a> - Windows XP software compatibility service
<a href="http://www.microsoft.com/hcl" target="_blank">www.microsoft.com/hcl</a> - MS Hardware compatibility list
<a href="http://www.windowsxpuser.com/" target="_blank">http://www.windowsxpuser.com/</a> Windows XP user
<a href="http://www.ntcompatible.com/faq3.shtml" target="_blank">http://www.ntcompatible.com/faq3.shtml</a> a WinXP FAQ
<a href="http://www.windowsxp.nu/" target="_blank">http://www.windowsxp.nu/</a> bink WinXP
<a href="http://www.winsupersite.com/reviews/windowsxp.asp" target="_blank">http://www.winsupersite.com/reviews/windowsxp.asp</a> Paul Thurotte's Supersite
<a href="http://www.microsoft.com/windows/catalog/catalogshell/shell.asp?subid=22" target="_blank">http://www.microsoft.com/windows/catalog/catalogshell/shell.asp?subid=22</a> Windows catalog
<a href="http://www.tipsdr.com/" target="_blank">http://www.tipsdr.com/</a> Windows XP tips
<a href="http://www.regedit.com/" target="_blank">http://www.regedit.com/</a> Registry Guide
<a href="http://swaroop.roop.com/index.html" target="_blank">http://swaroop.roop.com/index.html</a> Windows XP Super tricks and tips
<a href="http://www.firefox34.pwp.blueyonder.co.uk//" target="_blank">http://www.firefox34.pwp.blueyonder.co.uk//</a> Windows XP Mania!
<a href="http://www.themexp.org/" target="_blank">http://www.themexp.org/</a> - Additional themes
<a href="http://www.wincustomize.com/" target="_blank">http://www.wincustomize.com/</a>
<a href="http://www.xp-erience.org/" target="_blank">http://www.xp-erience.org/</a>

<a href="http://www.pcpitstop.com/xpready/default.asp" target="_blank">http://www.pcpitstop.com/xpready/default.asp</a> PC Pitstop WinXP readiness test

Your turn.