The following might be useful if you want to play around with android in your pc.

http://techpp.com/2010/07/25/how-to-...pc-or-netbook/

You can also use vmware instead of creating a bootable usb device, which is much easier.
Free Vmware player can be downloaded from the following link:
http://www.filehippo.com/download_vmware_player/