I sure am qualified to analyze a HJT log if I may say so. I know the writer of HJT. He is Dutch just like me and we have a good understanding. Besides that, I am the guy who created the first automatic log analyzer for HJT. After I introduced it here on this board, all of a sudden you saw all kinds of websites with online analyzing apearring :-)
I had a look at your log (posted Nov 30 2006, 05:53 AM on spywareinfo.com) and didn't found anything suspecious or bad. There are some things you can remove from loading at boottime, but that is all. If you remove them is up to you. It wil not harm anything, just make the boot process a bit faster and free up some system resources. If you will notice the increase in speed or not depends on your system and what applications you are using.
O4 - HKLM\..\Run: [{0228e555-4f9c-4e35-a3ec-b109a192b4c2}] C:\Program Files\Google\Gmail Notifier\gnotify.exe
O4 - HKLM\..\Run: [RegistryMechanic] C:\Program Files\Registry Mechanic\RegMech.exe /H
O4 - HKLM\..\Run: [HP Software Update] C:\Program Files\HP\HP Software Update\HPWuSchd2.exe
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_09\bin\jusched.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SiteAdvisor] C:\Program Files\SiteAdvisor\4608\SiteAdv.exe
O4 - HKCU\..\Run: [Spyware Doctor] "C:\Program Files\Spyware Doctor\swdoctor.exe" /Q
O4 - HKCU\..\Run: [swg] C:\Program Files\Google\GoogleToolbarNotifier\1.2.908.5008\GoogleToolbarNotifier.exe
O4 - HKCU\..\Run: [WMPNSCFG] C:\Program Files\Windows Media Player\WMPNSCFG.exe
O4 - Global Startup: WinZip Quick Pick.lnk = C:\Program Files\WinZip\WZQKPICK.EXE