advice, please

So, I'm buying a new computer. And no, it's not a Mac.
I'm sticking with Dell. My current computer is a 7 year old machine that has been wonderful to me.
But now it's time for more.
Anyway, here's my question. How am I going to get the stuff from my old hard drive onto my new hard drive?
I don't want to get someone else to do it. Last time I did that, all my email, all my bookmarks and about half my documents disappeared.
The old machine has a floppy drive, a zip drive and a ubs port.
The new machine is not going to be configured with a floppy.
What do I do?
Thanks.