Hello, Could someone tell me if this is correct: 1) retail cd to oem cd If you have a retail cd you only need to replace these files on the cd: DPCDLL.DL_ OEMBIOS.BI_ OEMBIOS.CA_ OEMBIOS.DA_ OEMBIOS.SI_ PIDGEN.DLL Edit setupp.ini and add oem. When ask for a key during install, enter the right SLP oem key. There is no need to add the $OEM$ folder or WINNT.SIF or SETUPREG.HIV? The retail cd also has these folders: WIN9XMIG WIN9XUPG WINNTUPG Is it necessary to delete them or can they stay? 2) retail installed to oem installed If you have a retailed version installed, you need to decompress this Manufacturer oembios files: OEMBIOS.BI_ OEMBIOS.CA_ OEMBIOS.DA_ OEMBIOS.SI_ and replace the old files on your harddrive with the decompressed ones. Then you change the key to the right SLP oem key. And you are done.