Easier solution!!!!
Hit esc when machine is booting to get boot menu.
Connect to CD/DVD to BartPE
Click on Fix VM SCSI
Map to Windows Directory
If this is 2000 server install BUS adapter, if 2003 LS Logic, if NT then install the NT one.
Reboot
NOTE if you need to you can change the settings on startup by editing the VM settings/options for boot time this is in milliseconds so set it HIGH.