Is it 100% compatible with xp pro? Just a thought. Michele Sayer I attempted to installed a Sony DRU-510A CDRW/DVD+-RW device and it would either hang the system or read only a partial directory of a burnt cd. It would not even read the original install dvd disk that came with it. It would read though an original commercial audio music cd. I checked the cd's quality in another rom and works fine. Also checked it in other systems readers and worked fine. I further plugged in the device into another machine running 1 gig of ram and an Intel motherboard, Intel chipset, 1.8 G CPU, etc and it hung that one as well. I took it back to the dealer and they plugged it into an MSI motherboard and ran all the tests that I did and it did not fail. I am wondering if anyone has any ideas since I am almost out of options lest taking it back and telling them where to put it. TIA Sam Reiner SNR Consulting Services Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.576 / Virus Database: 365 - Release Date: 30/01/2004 Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com