also I want to migrate to Windows 7 but Dell does not have any Vista or Win7 drivers for this system. Most of the hardware works fine with the drives that are included with Windows 7 except for the Bluetooth module and the Alps Touch Pad.
I am not familiar with the Inspiron 9300, but a good general rule to follow is if Dell didn't ever release Vista drivers for your system, you may not have a smooth ride moving to 7. You can usually use part manufacturer drivers if they are available.
Or, download and run the Win7 Upgrade Adviser from Microsoft and it will scan all your hardware and software - then spit out a report on what's hunk dory and what's not kosher with Windows 7.
Hope that helps!