As you all know, Team Foundation Server (TFS) Beta 2 is also available with VS.NET 2005 Beta2. However, you cant install TFS Beta2 until SQL Server April CTP is released. Rob Caron has mentioned about this in his blog .
Good news about beta2 is, you can install data tier and application tier of TFS in one machine. You can download the installation guide for TFS beta2 from here. Rob, mentioned in his blog that this installation guide supersedes the installation guide that comes along with beta2 dvd/cd.
Update: SQL Server April CTP is also released. Now you can install TFS with SQL Server April CTP...