Hi,
Are you running windows XP?
If so when you plug it in it will probably find it and install the software, if it doesn't find it then download & run Aida32 it will identify all your system components, so you can then go to the maker's website(s) & download the required drivers.
This can be down loaded from:-
http://downloads.theregister.co.uk/Windows/Uti lities/Benchmarks/aida32pe.html
Some where else that might help:-
http://www.driverguide.com/
http://www.driverscollection.com/
Good luck.
Steve