[schlaufer]

The trick is done by placing the content of the Disk1 directory from your original DVD onto two DVD-Rs.

On the first DVD, put everthing except data4.cab and data5.cab.
On the second DVD, put everthing except data2.cab and data3.cab.

There is approx. 1 GB space left on the second DVD - enough room for any upcoming patches and fixes.

I've used the label of the original DVD for my discs, but I do not think, this is strictly neccessary.