My system is Windows 7; I have the TWAIN driver for the scanner, so it really shouldn't be rocket science... I've tried a couple of downloadable programs which seem to be recommended - "scan2pdf" (just crashed all the time), and PDF-Xchange (which I already use as a PDF reader, but it won't easily prepare multi-page PDFs from a scanner). I've used Scansoft Paperport to good effect in the past - I really liked that, but would need to pay for a new version of the modern equivalent (~£30 IIRC?) - wouldn't object if necessary, but from current experience I'd rather be reassured that it would definitely work before paying up...
Any recomendations please?