Windows Explorer Keeps Crashing

Alright. Not sure what I have done wrong, but ever since last night whenever I try to open any folders (my documents, music, pictures, etc) I get this –

First thought; Spyware/Adware. So I ran a Norton 2009 Full System Scan and Found NOTHING. I then ran Spybot Search And Destroy and found a few things, fixed them all though.
Anyway, If I click Yes OR No to that message, it runs FireFox and sends me to some obvious scamming website. (I can include that if needed)
Then a few seconds later Windows Explorer Crashes, and needs to be restarted.
This is the error for it – Problem signature:
  Problem Event Name:   APPCRASH
  Application Name:   explorer.exe
  Application Version:   6.0.6000.16549
  Application Timestamp:   46d230c5
  Fault Module Name:   ntdll.dll
  Fault Module Version:   6.0.6000.16386
  Fault Module Timestamp:   4549bdc9
  Exception Code:   c0000005
  Exception Offset:   000620e3
  OS Version:   6.0.6000.2.0.0.768.3
  Locale ID:   3081
  Additional Information 1:   8d13
  Additional Information 2:   cdca9b1d21d12b77d84f02df48e34311
  Additional Information 3:   8d13
  Additional Information 4:   cdca9b1d21d12b77d84f02df48e34311
It’s exactly the same every time, except for the Timestamp of course.
So I did a search on the ntdll.dll and got this –

I don’t know what to do from this point
Advice VERY MUCH APPRECIATED!
Answer #1
dont know if this will help but ive had this same sort of problem,and the only way around it is check all recent software
programs recently installd on to pc. ie so you can narrow down the sorce. and check temp files this is were all your net folders live and often store virousis.down load malware antibites spyware program its ~ censored ~ awsome. update norton then run full scan of pc.also turn of restore and you net conection in order to stop the infecthion. if and when you think pc is clean cary on as per norm. and then try restoring pc from back up this will give you a clean run of windows hope this helps.