CGI Script, VERY SIMPLE, Results from search-Need to Load in different PAGE & FRAME!!

This is a very simple task. I need some type of script, I am assuming CGI...On the main page of a site I am putting together there is a Google Sitesearch. It currently loads into a new page per target = _blank. I need it to load the results into the mainFrame of a different page. More detail...The first page of the site is index.htm. It has the google sitesearch on it. The page I would like the results to load in is called index-search.htm. On that very page, there is a top frame called [login to view URL] and a left frame called left-search.htm. I would like the results of clicking search on the [login to view URL] to load in the mainFrame whose name doesn't matter I suppose. If you need more clarification please contact me through whatever means this site allows. I am looking to get this done ASAP as it is a very quick thing. Thank you.