Sldworks has stopped working

I have been trying to install Solidworks 2009 for quite sometime now. I managed to install and to register successfully.However whenever I started the application, I always get thismessage "Sldworks has stopped working" and I have to close it.
Can someone help me in this?
My systems are:
Acer Laptop Aspire 6920G
Intel Core 2 Duo Processor 2.1 Ghz
3Gb DDR2
Nvidia GeForce 9500m GS 512 MB (I have also downloaded the latestNvidia driver)
Windows Vista Ultimate 32bits.

Thank youSolidworksAdministration