If you are planning to install Sharepoint 2010 on Windows 7, here is an excellent article in MSDN, just follow the steps and you will end up successfully installing SharePoint 2010 beta on windows 7.

http://msdn.microsoft.com/en-us/library/ee554869(office.14).aspx

TIP: even if you follow the steps, and run the SharePoint Configuration wizard, the wizard might fail.

All you have to do is just to re-run it – it will install. I’ve noticed this seems to take place when you run into low memory issues, and the exception is stating failed provisioning on central administration.