hai i am sathish kumar doing my final year project on sending email from microcontroller. i want the information about "how to interface microcontroller with the modem?"
So, just get the information! It is here. It is available in a huge number of threads. But, wait a minute. You have to use the (sigh) search function.
Of you might prefer to use Google.
Or where you expecting people on this list to once more repeat the same information, because it is less work for you to start a new thread than to locate older threads on this subject?
http://www.keil.com/forum/docs/thread10811.asp
Apart from the obvious search terms like "modem" and "AT command", also search this forum for "neither knows nor cares" (type it in the search box; when the results appear, there is a link for 'advanced search' - there you can narrow the search by selecting 'exact phrase')