Here's a quite overview on installing clustering between 2 nodes.
1. Start Node2 up and boot up into a bios screen, not the OS, this will ensure the crossover cable connection is active (assuming your using a cross over cable.
2. After having configured the shared storage at a hardware level boot node1 up and format, name and assign drive letter to the drives, I assuming you going to install Exchange, so your likely to be having a Q,L,D.
3. Restart Node1 into a bios screen and boot Node2 into windows.
4.Using disk manager rescan the drives on node2, they should appear with the right drives letters and names from node1, if not do the same as you did on node1 remebering to keep all info the same.
5, Reboot node2 into Bios, then node1 into windows.
6. Now create the cruster , the wizards is pretty straight forward and will let you know if it encounters errors, once complete, reboot node2 and join to cluster.
Here's the same info, without the spelling mistakes and lots of diagrams.
Hope this helps
Andy