VirtualBox problem

Hello,
I want to play SA:MP on my Macbook pro. So, I downloaded VirtualBox.I have GTA:SA original DVD. But, when I install it on Windows XP(tried on sp1, sp2 and sp3) or windows 2000 everything's fine untill I want to start the game. When I double click it nothing happens!
So, if I want to play SAMP I first have to get single player working. Got any suggestions?

and yeah, I've installed Guest Additions

 

Noone?