At this point, I'm thinking you're probably screwed. Assuming you could track down an inventory of the hardware, finding the drivers online would probably be difficult at best if the company that bought the support rights has gone under.
Best thing I can suggest right now, is combing sites like ebay and craigslist, looking for restore media for that system. You may get lucky and find someone willing to sell you theirs or make a copy for you.
Otherwise, you can try putting Linux on it to see if you can at least salvage the system at all. It may not be your desired solution, but seems to me that a system running Linux which can do at least some of the things you probably want, is a whole lot better than what you have now.
We just reformatted my old XP computer, a Gateway - thats not even OWNED by Gateway any more, and my warrenty is beyond gone, its about 5 years old. I cant even call them and do the pay for technical support (not that we could afford it) because they sold this branch of computers off to some company that went bankrupt 2 years ago.
The problem we're having is that we need to get the computer online to reinstall all the components (graphics card, etc etc), but we cant get it to set up wirelessly. Wiring it directly to the router does not bring up an internet connection either.
I have tried every option to set up an network connection, save for dial up since we dont have it, and its all been one big epic failure.
The little icon for a wired connection isnt there. The icon and window for a wireless connection isnt there.
We've got a computer thats been totally wiped clean, we're standing at square one in the dark with out a map or flashlight.
Can any one help?