I have a page with VBS script that has a function that works when this
button is pressed.

<form name = "PrtSel">
<p align="center">
<select name=Printer>
<option value="1" selected>1
<option value="2">2
<option value="And so on">And so on
</select>&nbsp;&nbsp;<INPUT TYPE=button VALUE="Install Printer" NAME="Install">

and the following function is called successfully. 

<SCRIPT LANGUAGE=VBScript>

<!--

Sub Install_OnClick

..........................
..........................
  
End Sub
-->
</SCRIPT>

What I want to do is also to be able to press on the image map on the
same page and change the value of PrtSel and call the same function
and at the same time not to link to anywhere. So when you press on
that area, only the function gets called and nothing else happans. I
need to know what will go into href and whatever else may need to be
done.  If you have any questions or would need any clarification, send
me an email. Thanks.

I did this before, so maybe it'll help. I'm not sure how it relates to
vbscript, however.
<SCRIPT language="javascript"><!--
	function updateroom(room)
	{
		document.bldg.rmnum.value= room;
	}
//--></SCRIPT>
<FORM ... name="bldg">
      <select name="rmnum">
          ....
      </select>
</FORM>
<MAP name="mymap">
<Area shape="rect" coords="300,154,261,101"
href="javascript:updateroom('ED103');" ALT="ED103">
</MAP>

Thank you very much for the comment but the only problem I have is
that I need to have this done in VBS. I have code that has been done
in VBS and I have been told that it can only be VBS. Would you be able
to give me similar example but in VBS? Thanks a lot.

Based upon this http://www.intranetjournal.com/corner/wrox/progref/vbt/ch21_17_first_ex.shtml
and this
http://www.intranetjournal.com/corner/wrox/progref/vbt/ch21_21.shtml
and this
http://forums.aspfree.com/showthread.php?t=29357

I don't think what I gave you is far off from the answer.

I *THINK* (about 95% sure) it'll be something like:
<SCRIPT language="VBScript"><!--
	Sub updateprinter(clickvalue)
	    document.PrtSel.Printer.value= clickvalue;
	End Sub
//--></SCRIPT>
<FORM ... name="formname">
      <select name="selectname">
          ....
      </select>
</FORM>
<MAP name="mymap">
<Area shape="rect" coords="300,154,261,101"
href="vbscript:updateprinter(1)" ALT="PrinterName">
</MAP>

If that doesn't work (I've spent all of 5 minutes learning vbscript
for web pages, but the concepts are nearly identical to javascript),
please let me know.

sorry. replace "formname" with "PrtSel" and "selectname" with
"Printer" (I was trying to match your code, and got too generic later.

I will give it a try and I will let you know .. thank you very much
for your help... I greatly appreciate it.