I've read in several different DIY forums that a cheap and "easy" way to brighten up my kitchen and bathroom would be to lay some vinyl flooring tiles over the existing lino. How easy would this actually be, and is it something you could conceivably do yourself, or would I have to hire some sort of flooring specialist? How do you get a good fit around odd-shaped edges? Will it come out smooth and flat over the existing flooring? Should I use specially-sized vinyl tiles, or can I use regular sheet vinyl? Help!