Hi,
I have a old Dell Dimension 9200.
I'll buy a solid state disk: Smasung 840 120GB, but my system board controller ICH8R support only SATA drive.
I have the PCIe x4 slot free.
It's a good choice to buy an ASUS U3S6 for connect the SSD:
http://www.asus.com/Motherboard/U3S6/#specifications
Thanks
Jan