This is a posting of code I haven't touched in a while that seems relevant.
This was originally inspired by this forum posting by Norm: http://forums.lavag.org/Automatic-Recursion-t4318.html

External Node: http://xnodes.lavag.org/externalnodes/recursion.html
XNode (LabVIEW 8.20+): http://xnodes.lavag.org/xnodes/code/AHR_Recurse_xnode.zip

This XNode is one that I demonstrated at the User's Group meeting a year ago. It's not tested much, and might need polish, but it seemed to work.

Just make sure your VI is re-entrant for it to work.

If you want to use the External Node, then make sure to enable them in your INI file. I'd recommend the XNode. Just be wary and save your files often when dealing with user-made XNodes!