µTorrent is an efficient and feature rich
BitTorrent client for Windows 95,95,2000,XP,2003

It was designed to use as little cpu, memory and
space as possible while offering all the functionality expected from advanced clients.

Utorrent supports Speed shaping of torrents.
Utorrent supports Queue, resume, pause of torrents.

You don't need Sun's Java to run utorrent
You don't need to add registry entires or setup program

Just click on utorrent.exe and youre in action.

Utorrent supports UPNP so no manual port fordwarding is needed , if youre Router supports UPNP
( eg ASUS WL-500g and ASUS WL-500g Deluxe , which is a hardware router that can share Bigpond Cable connections)