Follow the following steps to setup a PPP connection with Windows 7 :
Open control panel, and search for Phone and Modem (or use the Dutch equiv. etc)
Go to Modems, add modem
Select the Communications cable between two computers
Go to network and sharing centre and choose set up a new connection or network
Choose Connect to the Internet
Ignore the you are already connected to the internet warning, choose set up a new connection anyway
Choose the “Communications cable between two computers”
Fill in the appropriate username, password etc.
Now you’re all set!