Where are the tutorial files for ISE WebPack?
On my system they are here:

C:\Xilinx\12.3\ISE_DS\ISE\ISEexamples

The ones you mentioned can be downloaded as zip files from that web page. You want the ISE In-Depth Tutorial and the associated zip files. They are included amongst those that should already be on your system in the ISEExamples directory.

I don't think that the hardware for that example is still available. If you get a Digilent Spartan 3 kit a similar alarm clock example can be downloaded from the Digilent web site.

The best place to get questions about Xilinx software answered are the Xilinx forums.