frontpage just shouldn't be used, you will get cleaner code for your sites using dreamweaver, Frontpage can make a right mess of your coding.
@steed: If you are only with PN for their webhosting, why dont you go to a company that provides web hosting as their main service? No offence to PlusNet, but, PN is an ISP, which they are very good at delivering (in my experience), the web hosting they provide, seems like a "bonus" feature, a free gift, if you will, IMO. Personally, I would rather stick with an ISP because the are delivering a good ISP service, not because of their web hosting.
If your sites are small, there are plenty of Web Hosting companies that will be able to host your site at a really cheap price (just make sure you do a google background check on them though), and as for addresses, I'm assuming you are talking about URLs (yourdomain.co.uk), these can be registered cheap through 123-reg or Just the Name and you own the name until you decide to give it up or stop renewing the domain, so you can move your site from web host to web host if necessary and not worry about the domain as all you need to do is make sure the domain name is pointing to the correct location (usually your web host will take care of this)