[flexcoders] Instantiating an HTTPService with actionscript

[donvoltz]

Hi,

Would someone show me how to send an HTTPService using actionscript. 
For example, how would I do the following without using tags?

<mx:HTTPService url="{myURL}" id="HTTPdata" method="POST" 
resultFormat="e4x">
  <mx:request>
  <mode>{mode}</mode>
  <mode2>{mode2}</mode2>
  <catid>{catid}</catid>
 </mx:request>
</mx:HTTPService>

Thanks in advance for the help

Don