Yes you can. There are mining pools that work cooperatively and share the resulting generated block. See http://mining.bitcoin.cz/ http://mining.bitcoin.cz/ and

Yes you can. There are mining pools that work cooperatively and share the resulting generated block. See http://mining.bitcoin.cz/ http://mining.bitcoin.cz/ and http://www.bitcoin.org/smf/index.php?topic=1458.0 http://www.bitcoin.org/smf/index.php?topic=1458.0 for two different approaches.