Which Linux can I install on an old IBM ThinkPad (Penthium II)?

Can you write out the specs of your particular model?

What distros have you tried? With or without a graphic interface?

Puppy Linux works really well on old PCs
I also suggest Slitaz Linux, Arch Linux, DeLi, and Damn Small Linux

I second what @halabihazem said. I personally tried a Puppy Linux distro on an old laptop (800MHz processor), and it worked fine. It was pretty fast for such a slow machine (which makes me wonder why I have a core-i5 running a Windows XP that lags)... Just saying…

Thanx! I just tried Puppy and DSL… and I begin to think that the problem is the ThinkPad…