What mobo do you have Leo?
There is aPCI splitter if your PCI slot allows for this, LinITX sell one. I would go with a Geforce 4MX PCI or summit for the resolution as people with these seem to get the resolution sorted with the Nvdia drivers alone.
If you have an epia or summit with PCMCIA you can get a USB2 or Firewire or USB2&firewire PCMCIA card. USB2 is fone for external dvd but i would use firewire if you are gonna watch movies as it generally has a better sustained transfer rate. However there might not be much difference through a cardbus slot.