Here are a few suggested distros if you still have an old PC lying around the house. Take note that for old machines, it’s more advisable to use kernel 2.4 not kernel 2.6 since kernel 2.6 supports preemption which some old processors don’t!
486s DSL ( Damn Small Linux )
P133 Puppy Linux or Mandrake 8
Good luck trying 😉
Go to geek.com for further info
You can also go to tuxs.org and let them choose for you.