How Do you keep your records?

[PuppetMaster]

If audited, it will be imposible to prove your winnings and losses. The IRS could take your winnings for word, and then tell you that they are throwing out your losses. SO if you won 80,000 and lost 30,000, they can tell you pay tax on 80,000, and the rest is unprovable. How can you go about proving your winnings/losses on Internet Poker?
Will a normal spreadsheet do the trick?
I print out all of my withdrawals, but that is useless, because you must track your records for every session, and my PT database has been full for a very long time....

Just curious as to your record keeping methods...