Huh. Didn't you know you can be logged onto 2 accounts at the same time running programs
SIMULTANEOUSLY on separate accounts. :D Even Windows XP Home :D
EASY: Hold the Windows key and hit L to switch between the two accounts running software simultaneously. Try this first. It's easy! Or use "Start -> Logoff -> Switch User" ... That will keep all applications running while you log into another account.
HARDER: Failing this, use the PC simulator/emulator method. This allows you to run multiple copies of Windows simultaneously on your computer instead (on separate hard disk partitions or separate virtual disks). Virtual machines allows you to concurrently run Linux
and Windows 95
and Windows 98
and Windows XP
simultaneously in separate windows on Windows XP. Or multiple copies of Windows XP. Try
Microsoft Virtual PC, or
VMWARE. You need to be sure they support the networking support you need with the BlackBerry emulator.