visit this link http://www.albeysreptiles.com/incubate-eggs.htm for future incubations.
as the last post said, if you have a place in the house that is about 80 degrees, you can keep the eggs there.
to build an incubator on the spot, you can use a tupperware container or one of those disposable ziplock containers with a tight lid. you can buy a bag of perlite at home depot or lowes for under $3. mix 1 part perlite to 0.8 part water. fill the container 3/4 of the way and lay your eggs on it. keep the lid on so it stays humid.
then just keep that in a place where it is somewhat warm (if you can't find one, try somewhere around your computer which gives off quite a bit of heat!).
the above is what another poster, Xelda, told me to do. thus far it seems to work.
good luck