If you have multiple boot options (i.e. XP, Linux, etc.) configured on your Windows Vista installation, or you just want to tweak some of the options available, you could use the command line tool BCDEdit or the much more user friendly EasyBCD.

From EasyBCD’s web site:

EasyBCD is NeoSmart Technologies’ multiple award-winning answer to tweaking the new Windows Vista bootloader. With EasyBCD, almost anything is possible. Setting up and configuring Windows boot entries is simple, and there is no easier way to quickly boot right into Linux, Mac OS X, or BSD straight from the Windows Vista bootloader - on the fly, no expert knowledge needed!

Since a lot of users who load Linux on their machines complain that the installation overwrites the Windows boot loader, this utility can be a great way to get the configuration back the way you want it (disclaimer: I have not tried to do this, but it makes logical sense that you could). There is an extensive screenshot gallery available to view and you can’t beat the price (free).

Vista users may want to make a bookmark of this page since you never know when it might come in handy.