So if the purchaser doesn't have a Gox account, they will simply pay in BTC and then, assuming the autosell option is on, they will be sold for dollars after 6 confirms.  Do you know if the vendor already has enough BTC as a buffer in his Gox account, can the autosell happen instantly?  Example...

I have a Gox account with 20 BTC and a non-Gox buyer purchases a product for 10 BTC.  10 of my 20 BTC are sold and the 10 from the purchaser get credited to my account, meaning I have 10 BTC + 10 BTC with no confirms.  Is there any way to make this work if it doesn't work that way already?