Jeff Atwood at Vertigo posted his version of Cliff's Notes for a Team System Install, including links to get the trial versions of everything required.  If you aren't going to read the official guide, you might try his approach.  I know no one reading this blog would take shortcuts...but just in case.

Meanwhile, you can still get a Virtual PC image with the TFS release candidate from MSDN subscriber downloads.  It's under Developers Tools | Visual Studio 2005 | English | Visual Studio Team Foundation Server | Visual Studio 2005 Team Foundation Server Trial Edition (English) | Visual… RC VPC Part 1 of 2 and RC VPC 2 of 2.  There's work being done for a new VPC with the final (RTM) release, but that won't be ready for a couple of weeks.