How do you update your twitter status using YQL?

Question

This is the code example I am following:

VALUES ('tweeting from yql!', '@your_consumer_key', '@your_consumer_secret', '@your_access_token', '@your_access_secret');

I understand the consumer key and secret part however I dont understand what to put in for the your_access_token and your_access_secret part.

Are these urls I was given what I need to add for the last two items?

http://twitter.com/oauth/request_token