No Dual Boot Menu

Ive just installed Windows 7 beta onto an empty partition in my PC thats running Vista Home Premium x64. If I boot the PC i get no boot menu, it goes straight into Vista. If I put the Windows 7 installation dvd in my drive it goes straight into Windows 7. Both operating systems are working fine but how do I create a boot menu instead of using the installation dvd to start Windows 7?

Did you use dualboot program like easy BCD to install 7? or you have just run the 7 installation? if so then
go to Vista Home Premium x64 system properties, advanced tab, startup and recoverey settings, default operating system, (check) the time to display list of operating systems box. okay

Thanks for the advice, I will give it a go.

Still liking windows 7 tho so it may end up as my primary operationg system