Last I heard, flash didn't work in the 64bit IE browser but it does work on the 32bit browser which is also installed on a 64bit system and is likely what you are using when you select IE. Install the 32bit Firefox which can run flash.
I don't use Bigfish so I can't really help and it seems their own forum isn't much help either...
http://forums.bigfishgames.com/posts...8.page#1370626
Many complain of jerky movement or it working on one video card and not another.
Are these actually exes? You might try running the games in Vista compatibility mode (you may need to run the installer this way also). You right-click on the exe and choose properties, then the compatibility tab, and set the flag to run this in Vista mode.
If that doesn't work I have another suggestion. Create a directory called c:\Games and install the game there instead of in "C:\Program Files (x86)". The reason I suggest this is because it is possible the game is trying to update .ini files or .dat or actually any type file stored along with the game and Windows 7 does not allow this because it considers the Program Files folder a system folder and UAC (User Account Control) may prevent it.
If this works please report back exactly what you did so anyone else searching for an answer might find it too.
BTW, what version of Win7 is installed on your computer (starter, home premium, professional, ultimate, enterprise)?