aristotle - 8:02 pm on Feb 10, 2013 (gmt 0)
If at all possible, you should try to get some related relevant content on both pages. 1script suggested that you add a paragraph to the old page that has some relevance to the content of the new page. I suggest that you also add some content to the new page that includes the old keyword and some other words from the old page. This would make the re-direct look more natural. If you can't do this, then you might think about the double redirect that 1script suggested, but that would be my second choice.