Those Star Wars are old games and are not officially supported by Windows 7. I believe there is an hack for them so you can play in Win 7.
I highly recommend Mass Effect though if you have not played it. It has a very good storyline which is a reason why I bought and BioWare is known for making excellent RGPs.
BioWare also developed the Star Wars: Knights of the Old Republic 1 (KOTOR 2 was developed by Obsidian), but the controls are a bit quirky compared to Mass Effect. Not surprising since BioWare had a long time to refine the controls.
I am contemplating Dragon Age: Origins (2009) because it has received good reviews and it is another RPG developed by BioWare so I'm pretty sure I will give this 3rd person game a shot.