The slush pool settings that work are
stratum.bitcoin.cz:3333
worker_name (usually your login_name.worker1,2,3 etc.)
worker_password (as per your Slush settings).
Note that on Slush you need to create your workers.
It is a good idea to populate the other pool entries with backup pools.
Can you access your web gui?
What does your Status Overview page show? (post a screen shot)
Can you post a screen shot of the Status, Miner Status page?
Cheers
The miner status page should show how many GHz and what pools are alive. It sounds like you having problems I agree on previous post wrong DNS can stop it all, might check it. If not try another pool.
If no pools are working if you show us a screenshot of miner configuration page we can try to help. Also if you us ipconfig and show it aswell so we can see what settings should be to compare.