Obtain the latest RC2 Stable Client from the download links at the bottom of the page.
Using a suitable Repackaging suite such as WinINSTALL or MaSaI Editor & Repackager. Repackage the Legacy Executable file and then distribute using SMS or Group Policy through Active Directory (AD). I find this package once created is best Assigned to 'User' rarther than 'Machine', however you shouldent have difficulty either way.
Make sure before repackaging you specify on the program how you want to deploy the application, whether published or assigned.