Being verry simplistic. You need a page dedicated to that keyword. Page title, Meta description, title tags, h1 tags and themed content.
Once your on page is set up, start building links using that anchor text. If this is a long term goa for you, stay away from Senuke. You will just be spamming the internet with low value content and the links you get back will be just that, low value.
I would say, create some articles and submit to Article directories (low value but best "built" link) A better idea would be to find your competitors, (any site apearing on the top 20) contact them, and offer them something of value. If you get a link from a competitor/related website it will be much more powerfull than a random article link.
You may think Senuke is a great press and go tool, but after using it for 6 months, it was all a big waste of time and energy.
GREG