Blackberry Desktop Manager Will Not Run After Upgrade to Windows 7

I recently changed my computers from Windows XP to Windows 7 and just this morning I found out that my Blackberry Desktop Manager will not run every time I try to click on its icon. And now I cannot sync up my calendar which is quite freaking me out.
Just so you know I installed the Blackberry Desktop Manager Version 6.02 and I am getting the Welcome screen but when I try to click on “Get Started” an error message will pop up saying that the software has stopped working. It kinds of freezes itself.
I hope somebody can help me out with this problem.
Thanks.
