I worked with EasyBCD here when Vista was first released and that became available shortly after. I first ran into the mimic of that however being the VistaBootPro piece of garbage until seeing how EasyBCD was the one to advise.
For two versions of Windows however you still need one to detect the other in order to see a dual boot actually work. One copy of Windows still has to detect the partition/drive the other copy is installed as well as the version itself along with adding to the boot loader.
For the two links there I'll still review those anyways. The timeout= ? seconds is still seen in Vista but sees a different look in the msconfig utility like the image here shows.
