Internet Explorer 7 Beta 2 preview (build 5299) has been leaked to the web and removed at Microsoft's request from many sites but it is still available at some sites.

Here are some screen shots:
http://rapidshare.de/files/11685012/ie5299.zip.html

If you are not satisfied with secreen shots here is some links for download :

http://www.megaupload.com/?d=DRPSGZO1
http://www.jcxp.net/forums/index.php?showtopic=4499

BEWARE:
some users tried the no install version of ie7.0 and reported that IEXPLORER.EXE open multiple times and sits at 100%