With 64 bit when you install the programs you have to install them into the 64 bit programs folder instead of the normal programs folder. The normal folder honestly i have no idea why they have two folders other than for if you go from the 32 bit 7 to the 64. I had Photoshop cs on a 7 system and it ran fine you just have to get them installed into the right folder.
For drivers especially for your tablet go to [link] and go under their download section and find the drivers for your tablet, they should automatically install into the correct place. Make sure also that everything you run is set to run as "administrator" which you can do by right clicking on the program either on your desktop or in the start menu. That was something they introduced in Vista and kept in 7.
you need to know if you are running the 64 bit version of the OS and your programs. reinstalling them in 64 bit mode will likely fix them. welcome to the driver hunt, the worst part of computer repair.
i was just asking because without installing the drivers from those disks dells can be really wonky. sounds like it's just your tablet drivers though. the wacom website will let you download them again.
you mean like the buttons you have to configure in the software thing? i always set mine up to have a quick undo. for some reason my tablet wheel now works backwards, so clockwise and counterclockwise are reversed. never have figured out how to fix that.