Re: Hardware requirements
"Get them onto Linux (you haven't seen the folk I deal with)"
lol, Linux. Right, that's nearly as barmy as the people suggesting ReactOS as a solution.
POS software is by and large written for Windows. Nobody's gonna rewrite for Linux and WINE is fine for playing games or doing a bit of Photoshop, but I wouldn't run a business on it.
Linux might be fine for your nan's computer, but a retail business needs to be able to rely on support.
If the tills go titsup on a Saturday afternoon, you can't log onto an Ubuntu support forum in the hope that some well-intentioned nerd is gonna help you.