hmmm i thought about putting a dual monitor card in but it'd have to be AGP and a mac specific one and support ADC - summut like the ATI Radeon 9000 Pro Mac Edition here:
http://store.apple.com/Apple/WebObje...BTe/2.3.0.5.10
A 3dfx Voodoo 5500 64Mb PCI just went on ebay for 38quid so i'll keep an eye out on there i guess. That would have done perfectly.