I had actually never heard of that until now... Is it easy to set up a way to receive/convert them? If so then sure.
I think it's easy - you need to download the opensource client from bitcoin.org, start it up and wait few hours when it will be downloading a full list of all transactions that happened between everyone (that's how the system works, records are public and constantly being encrypted, it's called "block chain"). The client will create a file for you:
wallet.dat, depending on your platform it will be in one or another directory, I'm sure you will find this file - if you will have troubles finding it, I will help you.
Be careful about this file because it contains private keys to your bitcoin address (private keys are created with elliptic curve cypher). But the private key itself isn't encrypted (yet). So this file is basically your wallet: you lose it - you lose all your money. Somebody makes a copy of this file - he stole your money. You can make backups of this file, but better if you encrypt them with some software.
Each time you send some money somewhere a new address is used (initially wallet contains 100 adresses). So after you send money 100 times somewhere, you will need to make another backup copy, because the old one will not contain the newly created address. Also if you click in the client "new address", you will need to update your backup copy.
That should keep you safe when you start using it. But since bitcoin is becoming popular, some bitcoin-gadgets appear free to download, which appear to be doing something cute, but in fact they only search for file wallet.dat and send it to the author of that program. I'm wondering when viruses will start hunting for wallet.dat... and by that time it certainly will need to be encrypted natively.
You can sell your bitcoins on several different sites, a full list of them is on bitcoincharts.com, from there you can find a link directly to the site.