NAS Advice

I am looking into buying a NAS device, for my four networked pc’s. A pentium 4 925 with 2GB ram and Vista premium, A C2D 4300 with 1 GB ram, a celeron M 1.3 Ghz with 256 MB ram laptop and a celeron 1.1 GHZ with 256MB ram. They are connected via a wireless router with 10/100 Lan (I think) free ports. I want to spend @ £100 any advice? Thanks in advance :slight_smile: