I want to travel from Lisbon to Evora on a Network National Express bus. Which station would I leave from?

Thank you!
Marsh

Station is called Sete Rios; it's a red building behind Sete Rios rail station and Jardim Zoologico metro. Buses go often; almost every hour. For schedule see http://www.rede-expressos.pt/. It's possible to buy tickets on line (but probably not necessary). I don't know what "Network National Express bus" is. Rede is a national bus company.

Thank you very much for your help!