beginner - call a google map with user address

Hi,
I came across an article that described creating a form in a webpage where the user enters their address and hits submit. This then opens a new browser window at google maps with directions from their address to my location already shown.
How can I set this up using Gravity Forms?

the code to do it in a web page is

<form action="http://maps.google.com/maps" method="get" target="_blank">
Enter your starting address:
<input type="text" name="saddr" />
<input type="hidden" name="daddr" value="12th & C Street SW, Washington DC" />
<input type="submit" value="get directions" />
</form>

Thanks,
form stuff is all greek to me, but I puzzled it out, I am amazing, or your product is really cool ;-)
one last issue, can I have the map open in a new window like the sample code does? I could not get that to work, right now it opens in the same window. I did not want the user to navigate away from the site.