Hi
Like yunsabit said, your laptop is quite slow for PCSX2, but you can play with the options and try the new speed hack on the newer revs because it boosts the FPS quite well depending on the games.
To compile your own emulator, go there
http://forums.pcsx2.net/thread-2373.html
If you have any problem compiling, just check the answers in the thread I linked, there are already a lot of solutions that may help

Or you can just wait some days and Krakatos will upload a new snapshot with this speed hack.
Whatever, seeing your rig, you will be able to play some 2D games not badly I think (Disgaea or other 2D RPG games, 2D fighting games etc) but for the rest either try to use GSdx graphical plugin with native resolution checked, EE/IOP x2 and wait cycle speedhacks on, default options in advanced options, and try VU skip mode in CPU options. It may be better for you but don't expect any miracle with your rig I'm sorry, PCSX2 is quite CPU power demanding
Core 2 Quad Q9550 @ 3.7Ghz - Geforce GTX 280 1Go OCed @ 640/1400/1200 Mhz - 4Go RAM Corsair Dominator PC2-8500 - Sound Blaster X-Fi Fatal1ty Pro Series - Windows Vista Ultimate x64