net stop msexchangeadtopology /y
net stop msftesql-exchange /y
net stop msexchangeis /y
net stop msexchangesa /y
net stop iisadmin /y

http://blog.mpecsinc.ca/2010/01/sbs-2008-speed-up-that-reboot-script.html

I had a similar one for 2003, hadn’t created one for 2008 yet – Thanks!