Don’t replace your broadband without checking out the sort of speeds you’re on and finding out if you can get a faster broadband speed in your area. Firms like EE, Sky and Talk Talk will sell you 17MB broadband for as little as £1 a month (or perhaps for free if you’re lucky enough to get a great deal when the market’s hot) but you don’t need to settle for the slowest form of broadband.
Use a website like broadbandspeedchecker.co.uk to determine if your current provider is giving you the broadband speeds they’re advertising. If you find that you’re not getting the sort of speeds you were expecting, use one of the site’s useful tools to determine where all the speed’s going. It might be that the wireless router isn’t doing the job anymore. If you think that’s the case, wire your router to your PC and then check the speed. It could well be that you’re Windows settings aren’t optimised for quick internet access. If that’s the case, a tool like TCP Optimizer that you can download from the web will help get that speed back.