As i'm new here and i can only post here...
My questions are:
I have a Asus X54L i3-2310M 2.1 Ghz it doesn't have a openGL GPU and using GUIminer i get 700 Khash. Isn't this too low? A friend of mine has a Asus MV50M with a celeron 2 (cpu: duo P8600) and a geforce 9600m GS and get 4 Mhash with GPU and 2 Mhash on cpu. He also runs GUIminer. What am i doing wrong?
What you are doing wrong is not using a half decent ATI/AMD videocard. Honestly, none of the above hardware makes any sense to mine with. To give you an idea, a 5850 videocard gets 360+ MHash. Thats 360000 KH/s. Compare that to 700. Profits are directly proportional to hash rate, and I can assure you, with a single 5850 you wont make much. With your cpu you will essentially make nothing. Feel free to mine for a while and collect 0.0001 BTC or so per month, just dont think you are even earning back 1/10th of a percent of the electricity cost, because you are not.
2- Mining pools:
Which one is best? BTCGuild or Deepbit? I run both... splitting my 700 Khash. Where should i get faster payouts?
Well, usually Id say, check my signature. Its an awesome pool with zero fees and if you want, a very nice miner app (launches from the website, give it a try). But with that hardware I have to ask, does it really matter? Id say pick any pool that calculates enough decimal places that your share doesnt get rounded out and becomes zero. Im only half joking.
3-BTC to Euro bank account:
I've read about intersango, MTGox and AQOIN. Are they safe? Which one is better to Portuguese bank account?
Unless you intend to buy other hardware, you will need Euro to BTC. Because it will take years before you mined enough coins to warrant a transaction.