public av cd

does anyone still use this? I have been using it along with the updater... it's worked fine until just recently. the last one I made would boot, give the usual menu and then go straight to results without doing any scans.... so I redownloaded and rebuilt from scratch.... and it won't work.... at first I thought it was a sata issue so I set it to compatibility mode on the sata and that didn't help I then tried it on an old win98 machine and it wont' boot on there either..... says the drive letter isn't responding or some such

apparently I need to fnd a new updateable, cd bootable virus scans..... and suggestions? either on what I'm doing wrong or an alternative?