Tinus - 10:25 am on Dec 6, 2006 (gmt 0) [edited by: Tinus at 10:28 am (utc) on Dec. 6, 2006]
A DMOZ or Yaho directory link alone wouldn't be enough.
A lot of inbound links from authority sites in your field would do the trick ofcourse but it might take some time.
Outbound links to sites in your field will be helpfull as well.
And ofcourse your anchortext (the words in the textlinks within your site)
[edited by: Tinus at 10:28 am (utc) on Dec. 6, 2006]