The problem with doing this is that you have to hex edit the explorer.exe file. This is where the information on the start menu vertical bar is located. The program which you speak of do this. Also and alternatively the icons to the left of that bar can be altered to show a single vertical bar with a company logo. But I don't know if it can be done on Windows NT, though I know it can be done on Windows 95 and 98. There was something on ZDNET a while back, do a search on it.