You can check the current visa bulletin below:

http://travel.state.gov/visa/frvi/bulletin/bulletin_1360.html

You can hookup with other DV winners and share infromations below:

http://forums.immigration.com/forumdisplay.php?38-Lottery-Visas-DV

 You can change your decision to do an AOS or a CP any time before your number becomes current by simply writing or calling the DOS number. I did CP so not so familiar with the AOS process, check  the link above I 'm sure you will get some answers there. My decision to do a CP was based on the information I got from the web site above, Which was the right decision.... well atleast in my case.. So I suggest do some research and make your decision. Now that you've won the DV the journey ahead is tough and stressful be prepared for the wait and specially the stress... the stress of uncertainity.