Bob, not to step on any toes here, but you could also find a replacement activeX control to use instead of the default button.
Okay this might get me into some trouble as I have no idea on posting links but anyways
www.planetsourcecode.com has a number of activex controls freely available for download, one of which may resolve JB's question. Please note this in no way implies this site or myself are reponsable for the quality of ActiveX you may download. Use at own risk, it's open source.