Fix Commerce Server 2007 After Renaming Machine Name, by Max AKBAR
Change your BizDeskHostname if you see “Bad Request (Invalid Hostname)” when you try to open your siteTerms, or profiles in Commerce Server Manager. SAMPLE SCREENSHOT
Reference.
Other things to consider about CS2007 when you change your machineName:
http://social.msdn.microsoft.com/Forums/en-US/commserver2007/thread/616f5519-585a-4d28-8d24-49f1053e3e42/