Please note the transfer process cannot be done when there are active players online. I usually wait till the night to get this kind of thing done. Also, I only transfer houses, monuments, or cities that will fit with the world (aka no dirt house you worked 5 minutes on).
Transfer
If you have a house or an area you REALLY like, I can transfer it over. We have plenty of room after all. It also saves you the time of doing it all over again. Simply compress your world folder into a zip, upload it to rapidshare, hotfile, or any other file sharing site. Then just post the link in the comments.