You could try Simply Computers (http://www.simply.co.uk)
You can order an II0005 from them on their website for GBP11.75 (inc. VAT)
 and get free three-day delivery
[check it's what you want first - hopefully I've correctly understood your question - 
I'm assuming your Dell V400 has a mini tower chassis, 2 PCI, 1 ISA, 1 shared slot]
The above card is ISA