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There have been quite a few recent threads about L$/MSN, use the site search and dig about a bit.
I would start here [webmasterworld.com...]
You get stuck with whatever title & desc they write up, and that's that. If your keywords aren't in it, you're out of luck. But you can ask them to change it for $149, I hear they're pretty snappy about that.
They do have a program for submitting additional URLs in the same domain, but it's pricey.
How many directory listings are there for the keyword phrase you want? Do they go far past the first page of results?