The form name changes everytime we open the page

I need to import a table from the stats page within our Yahoo Store, normally this would be easy, however yahoo is doing

the following to the page:

1. Page URL changes everytime you log into the website
1.1 - Solved by navigating to the page with script1(see footnotes)
2. Once on the correct page, the form name changes everytime the page is loaded
2.1 - There is however, only one form on the page.
3. The names of the form options change everytime the form is submitted.

What am I trying to do?
1 - Submit the form so that it only displays the last 10 days (rather that the default 365 days) using VBA
2 - Importing the form that loads into Excel

I tried using InStr to find the form name, this is what I have so far:

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About the form:
1. The form name always has a fF before the number
2. There are always three imput values, starting with the Submit(Value=show)
3. The two radio button names are incemented from the submit
(eg. Submit(Name=F410), then the next two names would be F411 and F412)
4. This is the only form on the page.

Thank you.
Simon.



Footnotes:
Script1 which loads the page with the form below:

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HTML Code: 

could we use VBA to select the 1st radio option in set one and the 3rd in set 2?

thank you.
Simon