>depending on your urgency and finances it could be beneficial to look at a 3rd party control that works wrapper dll that utilizes the quickbooks com interface. I use a control from www.coreobjx.com that is very simple to use and reduced the amount of code I would have to write dramatically compared to what I would have to write using the quickbooks sdk.

Thanks - I looked at QBs file services a couple of years back. My schedule on this project allows for a week just to service the QB integration - it seem enough, but I will check the control at coreobjx just to be safe!