Extract this zip file to somewhere on the hard disk.
Assuming you have extracted into the root directory of C drive then to install :-

1) Run sysadm
2) Select the menu option EPC > Load prices
3) Enter the path of the disk1 directory (c:\bmw1203\disk1\) and continue
4) When prompted enter the path to disk2 (c:\bmw1203\disk2\)

Refer to my website http://www.bmwpages.co.uk for instructions on setting the
currency and tax rates.