Moose - don't know what you are paying for your dial up but you can get good deals for broad band from most suppliers now for about the same price as dial up. Most of them seem to be limited cost for 6 months to a year and then it goes to the full price. As an example, Virgin are doing 24/7 dial up for £12.49/month and are offering broad band at the same price at the moment if you sign up before the end of January. This cost remains the same for 12 months and then reverts to the £17.00 mark/month. This is only one example and you should look around to see what the other companies are offering.
Hope this helps,