Not really, but you can use a Sheet_Change event:
<font face=tahoma><SPAN style="color:#00007F">Private</SPAN> <SPAN style="color:#00007F">Sub</SPAN> Worksheet_Change(<SPAN style="color:#00007F">ByVal</SPAN> Target <SPAN style="color:#00007F">As</SPAN> Range)
<SPAN style="color:#00007F">Dim</SPAN> rng <SPAN style="color:#00007F">As</SPAN> Range
<SPAN style="color:#007F00">' Only look at single cell changes</SPAN>
<SPAN style="color:#00007F">If</SPAN> Target.Count > 1 <SPAN style="color:#00007F">Then</SPAN> <SPAN style="color:#00007F">Exit</SPAN> <SPAN style="color:#00007F">Sub</SPAN>
<SPAN style="color:#00007F">Set</SPAN> rng = Range("A1")
<SPAN style="color:#007F00">' Only look at that range</SPAN>
<SPAN style="color:#00007F">If</SPAN> Intersect(Target, rng) <SPAN style="color:#00007F">Is</SPAN> <SPAN style="color:#00007F">Nothing</SPAN> <SPAN style="color:#00007F">Then</SPAN> <SPAN style="color:#00007F">Exit</SPAN> <SPAN style="color:#00007F">Sub</SPAN>
<SPAN style="color:#00007F">If</SPAN> Target > 1 <SPAN style="color:#00007F">Then</SPAN>
MsgBox "Cell " & Target.Address & " will now trigger your Macro"
<SPAN style="color:#007F00">' Call your Macro here</SPAN>
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">If</SPAN>
<SPAN style="color:#00007F">End</SPAN> <SPAN style="color:#00007F">Sub</SPAN>
</FONT>
Hope that helps,
Smitty