Jason:
<br />
<br />&gt; Can anyone tell me if it is possible to send a dynamic string variable to a
<br />&gt; C++ DLL that represents and equation for the DLL to use to calculate values
<br />&gt; in columns of an 2D array that is also passed.
<br />
<br />there is no direct way to accomplish the thing you want to do
besides the alternatives Stefan already mentioned so far. If platform dependence is no problem and you use a windows environment, you could find
an additional alternative in Microsofts .NET-Framework, which has the
ability to compile (not interpret!) .NET-compliant code (this includes
expressions like yours) at runtime. For more information, take a look
at <br />
<br /><a href="https://webmailcluster.1und1.de/xml/webmail/mailContent;jsessionid=D787A74D5518383E36A31D779A0116EE.TC162b#" onclick="javascript:window.open('http://www.west-wind.com/presentations/dynamicCode/DynamicCode.htm', 'linkWin', 'scrollbars=yes, location=yes, menubar=yes,resizable=yes,toolbar=yes')" target="_blank">http://www.west-wind.com/presentations/dynamicCode/DynamicCode.htm</a>
<br />
<br />for example. 
<br />
<br />Hope this helps and best regards
<br /> Hendrik
<br />
<br /><div>-------------------------------------------------------------------<br />Brilliance is typically the act of an individual, but incredible<br />stupidity can usually be traced to an organization. - Jon Bentley<br /><br />Hendrik Belitz, Computer Scientist<br />email: hbelitz@computer.org or hbelitz@ieee.org</div><br>