Help needed with old PC

Is there SKS out there who still has a PC with series as well as USB connectors who would let me spend ten minutes on it please? My wife and I have dive computers which will only download via a series connector and I have lost access to the computer I used to borrow as it has been replaced! In order to download the dive computer I would have to put a small (guaranteed virus free) program on and then download my old dive info via a USB connector. Unfortunately they do not work with series to USB connectors or we would have done that. Any help available would be appreciated.