Well, if it is a Pally it'll obviously run at 133MHz if we put in 133MHz memory. I'm back in Leeds now and he's in London, so taking the heatsink off will have to wait till the next time I'm there - I don't trust him to do it! If Aida also identifies it as a Pally though, I'll send him a stick of 133MHz SD-RAM I've got lying around in one of my boxes to see whether it'll work. If it does, I'll encourage him to buy some 133MHz-rated memory to replace what he's got, and that'll definitely give him a nice speed boost right there. He shouldn't have any trouble picking one up from a computer fair or auction site.