Fifteen security packages go head to head in our labs test, including Kaspersky, Norton, ZoneAlarm, McAfee, F-Secure and AVG. Find out which will keep you safe and which could let you down.

We test nine devices, from the simplest printers to versatile multifunction devices that print, scan, copy and fax

Why bother buying a big screen that takes up part of your wall, when you can buy a cheap projector and take up the entire wall?

Store it in your pocket. PC Authority takes fifteen USB drives for a spin around the block.

Taking photos is only half the fun. Touching them up on your PC and printing them is the other half. PC Authority takes a look at some of the best photo-printers on the market.

All the power of a desktop PC in a fraction of the space. We put a selection of desktop replacements to the test.

All the power of a desktop PC in a fraction of the space. We put a selection of desktop replacements to the test.

Benchmarking PCs is a tricky business. You need to ensure that you stress the systems, but also that the results you get will be relevant in the real world. Previously we have relied heavily on BAPCo's SYSmark2002 for simulating home and office use, with programs such as Excel, Word, Outlook, and web content through Adobe Premiere and Macromedia Dreamweaver. However, due to SYSmark's history of instability as well as the sheer length of time it takes to complete a run, we have put it on the backburner in favour of PCMark04 for this Labs.

With online services easier to use and cheaper than ever, there’s now no excuse not to back up your files, says Stuart Andrews.

The first place to start tweaking is your BIOS. Enter your BIOS by hitting a key combination on system boot (look out for F1, Del etc). A word of warning though, the BIOS is a very powerful tool, but can cause damage if pushed the wrong way.

They may look big and complicated, but a digital slr is just as easy to use and takes far better pictures than a pocket digicam

With free video services like MSN and Skype, you’re missing out if you don’t have a webcam.

It's only a matter of time before CRT monitors are committed to the history books, and when you see TFTs like these, you'll wish it'll happen sooner. The Labs team takes 10 of the best 17in and 18in TFTs, and runs them through the wringer to see which is best.

Internet everywhere, for affordable prices. Dave Stevenson investigates the claims, tests the speeds and delivers a verdict on the best plan for your mobile dollars.

Out with the inches, in with the speed. PCA puts nine of the best LCDs through their paces.

GPS is about far more than in-car navigation. Join us as we get running and cycling with seven of the latest recreational satnav marvels

Print, scan and copy with one device; we round up six of the best all-in-ones.

If your PC is less of a speed demon and more of a dinosaur then it's time to upgrade your CPU. We put the latest low, mid and high end processors to the test.

Unlike many of our performance-based Labs, business workstations are a whole different world of PCs, focusing not on the maximum number of frames per second, or how many overall points they can churn out in any given benchmarking utility.

Forgetting the hype for a moment, the Internet *is* a dangerous place. In the Internet age complacency is one of the greatest dangers facing business. While many companies assume that viruses an