Toshiba Satellite Pro L20 fitting DVD Writer

Question

I have a Toshiba Satellite Pro L20 and recently removed the DVD/CD-RW from it and replaced it with a DVD-RW so I can write to DVD. I have upgraded the BIOS and still the drive isn't recognised, I can't seem to find or access the Toshiba Utils that are supposed to be on my hard drive and am a bit stumped. Is there something I have to download to get it to recognise a DVD-RW drive?CheersKane