No, I got bizarre and unpredictable results.  Just so you know, I've used the technique posted elsewhere (I think by you) to createa a Google Search Results page that has the Search Box in an IFRAME at the bottom, and that worked just fine.

As a test I tried copying and pasting the working IFRAME code into the skin.aspx file, and it still didn't work.

- in one case, the page displayed inside the IFRAME was actually a Google skyscraper banner - for some reason a completely different page loaded inside the IFRAME (cannot possibly expain this one)

- in another, the page barely loaded, it loaded the logo and a little of the layout table, and stopped

- in another, I got ASP.NET errors

I don't have error details.  I found the whole experience to be too bizarre to explain (s/b a very easy copy & paste) so I punted.