http://www.gamespot.com/promos/bf2demo.html
good luck getting it going tho, they are crazy overloaded with downloads right now. i've been looking around for other places.
excellent way to see how it runs on your system, (stu
)
[edit] got a working link going at Download.com, slow tho, its going at 90k/sec at the moment. hopfully speeds up, but i doubt it.
Total file size is 559.9 MB