A memory card from my husband's Nokia phone has short videos of our son: how do I get them on to a DVD?

First you need a card reader to let your computer grab the files from your memory card - high street shops should stock a reliable model for less than £20 (but check it works with the type of card you've got). Then use a program such as the free Any Video Converter to turn it from a phone-friendly file into something that's compatible with DVDs. Then use Windows DVD Maker or Apple's iDVD (which should be built into your machine) to burn the files on to a disc, before watching them on TV or sending to relatives.

Can you please tell me how I can record listen-again radio programmes on to audiotape, to play in the car?

There are complicated ways you could go about this, but the easiest method is to buy a cassette adaptor: a tape-shaped gizmo that connects to the headphone jack on your music player and slides into your car's cassette deck. This means that you can download podcasts, transfer them on to an MP3 player and then play them back while driving. Popular Belkin and Sony models cost around £7.