I have been trying to find drivers for old laptops: Sony PCG-C1 VS/BW and Toshiba Portege 4000, and luckily found these sources:

Sony:

  1. a great article talking about how to find and install drivers for the exact type of laptop I am doing :-)
  2. drivers for windows 2000 – site a
  3. drivers for windows XP – site a, site b
  4. a guide how to open the toy

Toshiba:

  1. drivers download
  2. a discussion on Toshiba support forum