It's been a long time since I needed help here, BUT... I (had!) to replace the HD on an IBM ThinkPad (T22). Since the BiOS and documentation said this m0del would only support up to a 30 GB HD, I elected to replace the original 20 GB drive with a 30 GB drive. From the original, official IBM recovery disks (CD's,) I was able to restore the computer, BUT, I got the "activation required" message." When I tried to activate on-line, I was told I could only activate by phone. After several attempts by phone, I always got the final message (after entering the nine sets of six characters each generated by the installation) that the numbers are NOT recognized as valid Microshaft code, and an offer to purchase a valid license. What gives? The IBM recovery disks specify that they will restore the machine to "factory default."