How to bypass a windows vista admin user account password?

Just be patient. The Official release of windows 7 will have new features, bugs fixed, and so on............ making the RC version outdated.
Finally, update both systems. You need to install protection on the XP partition (virus and spy programs) but you don't have to on the Linux side.
Good Luck.

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Windows Starter editions will range between 45-50$, as well as the upgrades. Im currently running win 7 RC build 7100, and its great.
Login to administrator account then go to control panel>user accounts>see if your user name is listed there,if it is there you can reset the password & also you can change the type to admin type.If your user account is not listed there,some thing has deleted that(virus).try creating a new user with admin type.
3.if you can't log in to administrator account also,then try some free tools available to reset admin password through google search & use it.

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Unfortunately, you have to put XP on first. The boot loader from Microsoft will only recognize older versions of M$ software and nothing else. Here's what you have to do:
Save any files you may have on your Linux distribution so you can load them back up later.
Install XP, removing the Linux partitions and formatting the entire disk as you do it.
You may need to use another program or you may use your Linux disk, but the next thing is to partition the hard drive, giving XP and Linux some room to work. Depending on which you want to use most of the time, you may want to give the more important O.S. more room, or just split it 50/50 for now.

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Install Linux. During the install it will see the XP install and create a boot loader so that when you start your computer you'll see both of them in a list and you can choose the one you want to use at that time.
The windows 7 RC will expire June 2010. But starting March of 2010, your computer will turn off every 2 hours. So once the official windows 7 RTM gets releases, the RC is pretty much useless. In order to upgrade you will need windows vista and then upgrade to windows 7.