never download a file like that it may have been a virus that killed the data on your hard drive. if your hard drive is working hitting f8 should get you into save mode you may be able to remove what you did. you should still be able to get into the bios unless the virus has killed the hard drive. if it did you wont be able to get into the bios intill you unplug the sata data cable.
myself i would power off the pc and unplug the power and clear the cmos. then try to boot into the recovery dvd. if the recovery dvd wont boot see if someone have a full version of windows. boot with it then format your drive and then try the recovery dvd.http://www.hirensbootcd.org/download/
make that cs and see using the mini xp that you can still boot into windows and run some anti virus from the cd.