Itunes wont open. itunes has stopped working message Please help!!

Question

I had itune 10.1 working just normal, and suddenly it wont open. 
  even before that, 1st problem i had  was with Quick time, i couldnt uninstall it, kept saying newer version of Quick time installed..or something like that. and i figured out to install itunes without unstalling quick time. (thanks to Google) and was working fine for a month, and suddenly, now iTune wont open. I tried unstalling it, and reinstalled... that's pretty much i can do now!!  still no hope!! (btw, I use Vista, 32bit!) Please help me... here's what Problem report shows..
  " stopped working"  
Problem Event Name:
BEX
Application Name:
iTunes.exe
Application Version:
10.6.1.7
Application Timestamp:
4f71aced
Fault Module Name:
cryptdlg.dll_unloaded
Fault Module Version:
0.0.0.0
Fault Module Timestamp:
4549bd25
Exception Offset:
69431040
Exception Code:
c0000005
Exception Data:
00000008
OS Version:
6.0.6002.2.2.0.768.3
Locale ID:
1033
Additional Information 1:
fd00
Additional Information 2:
ea6f5fe8924aaa756324d57f87834160
Additional Information 3:
fd00
Additional Information 4:
ea6f5fe8924aaa756324d57f87834160
and another report: "stopped responding and was closed"
Description
         A problem caused this program to stop interacting with Windows.
Problem signature
Problem Event Name:    AppHangB1
Application Name:    iTunes.exe
Application Version:    10.5.0.142
Application Timestamp:    4e9243f2
Hang Signature:    6a2d
Hang Type:    2048
OS Version:    6.0.6002.2.2.0.768.3
Locale ID:    1033
Additional Hang Signature 1:    579344e9ab62a3902d6e00f558f404ca
Additional Hang Signature 2:    1748
Additional Hang Signature 3:    8fb4784d6c7db48473361b5a4e821ea6
Additional Hang Signature 4:    6a2d
Additional Hang Signature 5:    579344e9ab62a3902d6e00f558f404ca
Additional Hang Signature 6:    1748
Additional Hang Signature 7:    8fb4784d6c7db48473361b5a4e821ea6
PLEASE HELP ME.....  MUCHO GRASSYASS!      

Answer 1

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Click the Clear Display icon in the toolbar. Then take the action that isn't working the way you expect. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name or email address, may appear in the log. Anonymize before posting.