Pretty much, although you'll want to either buy the bitcoins anonymously (with fake info) or send them through a mixing-anonymising service. How to buy them depends on where you live. Bitinstant is one of the more popular methods. You can do a cash deposit at 700K locations around the world and have Bitinstant exchange it for coins which it sends to an address of your choosing. A lot of people create Instawallet addresses by simply visiting instawallet.org. SAVE the link because it is the only way to access your wallet. Copy down the bitcoin address it gives you, and tell Bitinstant to send the coins to that address. From there you can send the coins to your SR address, or for added security, send them through a mixer like Bitcoin Fog first and then to your SR address.