Will my laptop play these games...?

I have a Dell Inspiron 1520 laptop with the following specs:

- XP home edition OS

- Intel Core 2 Duo/ 1.5GHz

- 2GB Ram

- 250GB hard drive

- NVIDIA GeForce 8400M GS graphics card (32 bit)

Of course, I have a DVD/CD slot.

I am wanting to get/play the following games:

- Spore

- Black and White 2

- all Sims

I have looked online but it doesn't really tell me for sure if my system will run these games good.

I don't want skipping, freezing, etc.

For example: Spore system requirements say 1.6GHz and Black and White 2 requirements say 1.6 GHz also.

But since the Core 2 Duo is a newer processor will it still handle these games even though it's 1.5 GHz?

Please list which of these games will play good on my system.

And which ones will not play good or at all.

And what would need changing on my system for it to work.

P.S.

I am NOT computer savvy so please use laymens terms.