Here are the entries that stick out at me:
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R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = *.r5.attbi.com
^^Do you need a proxy? Who is your ISP? This could be the cause of Internet connection issues.
O4 - HKLM\..\Run: [mmtask] C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mmtask.exe
^^Just not necessary to have in startup
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
^^Not necessary
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
^^Not necessary
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
^^Part of MSN Messenger, but since the file is missing (double check this), it can be removed. Messenger may need reinstalled.
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Other then those, you seem pretty clean.
One last question, um, what is your problem? lol