Ok so i looked at the user manual and it clearly shows you how to do this, maybe instead of asking the question look at the manual first.
For mobile data to work, Wireless needs to be turned OFF, when wireless is on then data gets switched off, an visa versa.

APN settings are.
APN gprs.qtel
User: blank
Pass: blank

1Touch the Home button  Menu button  Settings Wireless controls, then touch Wi-Fi to disable it.
2Touch the Home button  Menu button  Settings Wireless controls Mobile networks, then touch Data connection to enable it.

Press the Menu key
Tap Settings
Tap Wireless controls
Tap Mobile networks
Tap Access Point Names
Press the Menu key
Tap New APN
Tap Name then tap the text box and enter QTEL
Tap APN then tap the text box and enter gprs.qtel