I recently downloaded a copy of Microsoft Antigen from the Microsoft website to evaluate. However after the trial period was over I uninstalled it as it did not really meet my requirements. The main problem I had with the product is the default system administration utility for Microsoft Exchange (System Administrator) disappeared after installing Antigen. Searching my entire disk for it proved futile. Now that I have uninstalled Antigen I still cant find the tool. I read an article on the Microsoft website for reinstalling the Exchange Management Tools as I thought this would bring the utility back, but the procedure failed at the very first step. Where you insert the EX2K3 disk and want to go for the 'custom' installation, there is no 'custo', there is only Remove and Modify. Please help, I would like the System Administrator back.