Microsoft has shipped the promised replacement for Windows NT 4.0 Service Pack 7 (SP7). The cleverly named Windows NT 4.0 Post-SP6a Security Rollup Package (SRP) is a handy 14.3MB package that provides all available post—NT 4.0 SP6a security updates. For more information about this free download, visit http://www.microsoft.com/ntserver/sp6asrp.asp. (For information about some specific post—NT 4.0 SP6a fixes, go to http://www.win2000mag.com and see Paula Sharick, "Mailto Address List Truncated; Post-SP6a Fixes," InstantDoc ID 9755, and "NT 4.0 Post-SP6a Fixes; Preparing for SMS 2.0 SP2," InstantDoc ID 8969.)