Hi there,

Anyone know where I might be able to get hold of a secondhand Dell  
Dimension C521? The pickings seem remarkably thin on eBay. It really  
has to be this model.

These are slimline tower units (i.e. they only take half-height PCIe  
cards):

http://www.hardware.info/images/news/dellc521.jpg

Thanks in advance for any pointers,

Ned