found a copy of OS X Leopard lying around the house and thought it'd be interesting to run it on my Dell Studio 1555 laptop.
help would be awesome, i'm not sure if it can be done on this model in particular.

I would also like to know this. I have a Dell Studio 1555 laptop with the following specifications:

Dell D1777M Motherboard
Intel Core 2 Duo T6600 @ 2.20GHz
4GB of DDR2
Mobile Intel 4 Series Express Chipset
IDT High Definition Audio

I'd love to run OSX on this laptop alongside Windows 7, but I really have no idea where to start. There seems to be a lot of methods to use, and I am unsure as to what would be the most compatible with my setup. I searched google and found a few tutorials showing people running OSX on the Dell Studio 1555, but each one had an ATI graphics card instead of Intel and I need to have my graphics card working since I would be using OSX for graphic and web design.

If there's anyone that has personal experience installing OSX on this setup, feedback would be appreciated. Otherwise, if someone could point me in the right direction, like what is the best tutorial I should follow, I would really appreciate it.