The drivers are particular to the hardware installed in your laptop, such as the bios, the sound card, the cd & hard drives, and so forth. Some must be either saved from your existing installation before reformat and reinstall, or downloaded individually from their respective websites. Some others are more universal and are included in the XP installation. It just depends...
So for the Sony DVD drivers, you may have to go to Sony, and so forth.
Here's Toshiba's support link:http://sdd.toshiba.com/main.aspx?Path=ServicesSupport/DeviceDrivers
If that doesn't help, you may have to go to the device manager in xp and check each device and download the correct drivers and updates for that device.
You may find what you're looking for here: http://majorgeeks.com/downloads35.html
An alternative, not tested by me, is to install and use a so-called driver utility, that claims to be able to scan your system and detect the needed drivers and updates, and install them for you. In that case, take a look at the featured software on this page: http://majorgeeks.com/downloads28.html
Let us know if this sorts it out, or if you need further clarification.