Help with Dell Inspiron 1545, RAM upgrade?

[Kotu2]

Is it possible to upgrade my ram to more than 4gb ? im still new in the "laptop area of expertise". i was wondering since the highest for windows vista 32 bit can i get windows vista 64 bit and upgrade it to like 6gb
sorry if this sounds stupid

 

[Tmagic650]

You laptops maximum memory might only be 2GB. Look at the laptops specs. They will tell you what the max memory is for that model