If you are like most people you will have Windows Server 2003 R2 installation media that only includes Service Pack 1. This means that any R2 server you deploy needs to have SP2 installed afterwards, which is time consuming and also pretty boring.
The good news is you can slipstream SP2 into your R2 media just as easily as with previous versions of Windows Server. Both the Disc 1 and Disc 2 media need to be slipstreamed or you will run into errors if you try to add the R2 components onto the server.
Simply copy your R2 Disc 1 and Disc 2 media to your hard drive, download the Windows Server 2003 Service Pack 2 Download, and run the slipstream commands.