There was a really good write up of how to conv in the blog area. I took a quick look and could not find it. You may want to look there for more info.
Quick summary though.
You do not ask a million questions. You can ask one. Something that does not have a 'yes' or 'no' answer. Within her answer, are clues that will segment into extentions of the original conv but be on a different subject.
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Recommended reading list.
Double Your Dating by DD
(This will work on your inner game)
http://www.freewebs.com/xfman/
(This will work on your outer game)