keil coding for AT89C52 with SE T-290

hi people i have to code AT89c52 with T290 mobile and have 2 operate 4 electric devices on/off but i dont know how to code on keil. IS there any manual from which i can learn how coding in done Keil. or any body can help me in this project.

wating for ur responce.

there is no manual. Well all you need is UART programming, rest is your programming skills on how you tackle the AT Commands. how well you know 8051 programming and have you ever used UART? if not then please visit serial communication tutorial on tutorial page.
http://www.8051projects.net/microcontroller-tutorials/