Livecycle Designer Error- everytime I open FORMS-HELP!

Can someone help me please?!
I can't seem to find anyone that can.
I have CS3 and everytime I open forms this happens. I have uninstalled and reinstalled it 4 different times-still continues...
I get this ERROR:
Adobe LiveCycle Designer has encountered a problem and needs to close. We are sorry for the inconvenience.
Error signature:
AppName: formdesigner.exe AppVer: 8.0.2073.1 ModName: unknown
ModVer: 0.0.0.0 Offset: 04d58113

then I get a second one saying:
Error signature:
AppName: formdesigner.exe AppVer: 8.0.2073.1 ModName: ntdll.dll
ModVer: 5.1.2600.2180 Offset: 000431a0

thanks,
cyndie