First, is USD being processed at this time or is the only option to request current BTC on hand and then use an alt-exchange to process to USD.

If they are processing USD, I have a question.

If you submit a withdraw from MtGox and let's say the price is at $500 and they don't "process" your withdraw until 2-4 weeks later, at what price are you being locked into? Are you being locked into the price on the day you initiated the withdraw, or on the day that the actual withdraw takes places. Obviously you would want to have the higher price, assuming it was going up. If the money is still in MtGox while it is "in-process", then they are making money when the price goes up, but taking the difference in the price.

Can someone elaborate on this for me?

Thanks