Maybe I got it working
I saw this posting: showthread.php?t=2446&highlight=set+search+trigger
I think that it may have helped. Here is what I did:
I did a search with my search page to look in a certain subcategory. The results page URL was as follows:
In the CSS Menu Writer "Edit contents" I placed the following in the link box: /product_Results.php?S_productsubcategoryID=[productsubcategoryID]&Search.x=54&Search.y=12&Search=Search
And IT WORKS!!!
Question...will those Search.x=54 and Search.y=12 gonna mess anything up? Is there a generic character to put in those or will it matter?