Gnome Do lets me run programs, search for files, perform application actions, 'microblog', queue music and search the web among other things via a search and select type interface operated from the keyboard. Is there a similar program for Windows XP?
Launchy pretty much does the exact same thing for Windows, and it's open source too
Launchy is a free Windows and Linux utility designed to help you forget about your start menu, the icons on your desktop, and even your file manager.
Did you look at Windows version
Colibri, Launchy, Executor, SlickRun or even not too visualy stunning but damn configurable "Find and Run Robot" ...
i'm sure there is much more if you search further ... wait ... 15 secs ... wikipedia is your friend: http://en.wikipedia.org/wiki/Comparison_of_application_launchers
Mighty Box looks & feels almost exactly the same, it needs a bit of work, it's probably a GnomeDo fork