Windows 7: iReboot

I installed this program in hopes of find a more convenient means of rebooting between OSs or simply rebooting. I have been avoiding any kind of boot manager or boot menus, because I want my two installations to be totally independent of each other. On first impression, I thought that this program would allow boot selection without making any changes to the MBR of either harddrive involved...but apparently not.

The only OS that appeared in it's tray icon menu was only Windows 7, not XP. After scanning through iReboot's directory, I didn't find any means to manually edit it's configuration, so I installed it's protege EasyBCD. Playing with it, I managed to add XP to iReboot's menu options, but when testing it on reboot, it just booted to a black screen with some eror about not being able to boot from C: (Windows 7).

There is an options to save the configuration to the MBR, but as said before, that is exactly what I didn't want to do. At this point, I think that the only solution is to uninstall both programs, but before doing so, I wanted to see if anyone would know if it is possible to use this the way that I want?