Hi there, firstly, RELAX.
This isnt as hard a problem as it appears
1: Boot into BeOS
2: Right Click on the actual desktop and a menu should appear
3: Go to the Mount > option and you should find within the list your windows partition (or drive as the case may be)
4: once mounted, go into Disks and recover the BeOS drivers you have downloaded from within Windows.
5: Install them as directed in their instructions
6: Reboot, config as applicable and finally
7: Enjoy, you now have at your fingertips the best OS ever written for x86 (imho)
If you need any other help in the future, drop me a line at:
the_leander@myrealbox.com
Take care and Regards
)))