Hi, I made a PRO OEM SLP cd following the sticky, I used source two using an XP Pro SP3 Retail with an MD5 matching the one here: hxxp://forums.mydigitallife.net/threads/12735-where-Can-I-find-Original-XP-SP3?p=189679#post189679 I ran the OEMBIOS tool I downloaded Acer (OEMBIOS.CAT CRC32=717B6EF3) added the files and alongside the oem files, rebuilt and installed. This install runs fine but when I get into Windows it says it's an unauthorized key, I tried entering key again found in the guide post and a Acer SLP key but no luck. I then used the OEMBIOS Changer and that seemed to do the trick but after install all the latest updates I keep getting errors and things aren't installing properly, first thing I noticed is IE the icon in the start menu isn't there, I can click on anything in it and when I go About it gives an error and shuts. The laptop is a Acer TravelMate but the OEMBIOS tool stated the Acer files rather than Travelmate could this be a problem. My two questions are why didn't the modified CD work for activation and after using the OEMBIOS Changer is it a problem caused by the changer or is it simply because I'm installing all the updates at once and something is going awol? Currently reinstalling see if that will sort the problem. Thanks.