first of all, many thanks to all people on this forum. with your help i was able to OEM activate my systems with windows 7 and it worked perfectly. thanks to the people to took the time to bios mod the Dell Vostro 1400 an D630 BIOSes whic have made this possible. Does the forum have a guide on how to create an ISO of a persicular version of windows 7 which will already include the OEM certificate and OEM SLP key which will make it so that it is already activated once it is installed on a system with matching BIOS SLIC table? many thanks in advance.