Please help me! I am 67 years old. I retired. Random 3 days ago, removed the keyboard driver. And now I can not find anywhere to download for free this little old (07/.01/2001) utility. I do not have a credit card and bank account. 3 days tormented by typing text on a small inferior virtual keyboard, which is in the anti-virus program installed on my laptop. I need driver for a standard keyboard (101/102 keys), or PS/2 Keyboard Microsoft Natural(version 5.1.2600.2180) Microsoft Windows Component Publisher (for laptop Toshiba).For Windows XP Home.

You can't actually remove it, it's a core part of any OS - you probably uninstall it. If you have done a full reboot and it hasn't been automatically reinstalled then something is preventing that. 
First probability is that it has something to do with Kasperski - disconnect your internet link, disable Kasperski and shutdown the pc. Wait one minute and start it up again .
If even now it doesn't work then option 2 - you might have a "ghost" of the incorrectly installed keyboard hanging around that prevents the system from
re-installing it correctly. Reenable Kasperski and try this:
- open a Command window 
- type:
  set devmgr_ show_nonpresent_devices=1
press Enter
- type:
  devmgmt.msc
press Enter (Device Manager opens up) and don't close the Command window
- in Device Manager go to the View Menu and check Show Hidden Devices. Now have a look and see what you have under Keyboards. If you see, as well as your current keyboard, a grayed-out "ghost" of the Microsoft keyboard, delete the ghost and OK your way out.
Shut down system, plug in the Microsoft keyboard and boot, and hopefully Windows will detect it; check in Device Manager when you reach your desktop. If it's a USB keyboard, you may need to unplug it and plug it in again once Windows is running to make the system notice it.