Hi Katmandu, welcome to NeoSmart Technologies.
Yep, unfortunately EasyBCD is a Windows Vista BCD editor/manager - you'll need to use the Vista bootloader to take advantage of EasyBCD's power and versatility.
If you'd like to add new multi-boot entries to a non-Vista PC, you should make your changes to C:\Boot.ini - unfortunately, it's not that easy if you're wanting to add non-Windows entries to there, such as Linux, BSD, or OS X.