Internet with SAP

1.how to connect sap to internet.How to configure that?

parameters:pmail(100) lower case.

data:dummy(100).

data:http_client type ref to if_http_client.

data:w_string type string,

w_result type string,

r_str type string.

data:result_tab type table of string.

data:cl_http_client type ref to cl_abap_char_utilities.

start-of-selection.

clear w_string.

CONCATENATE

'http://www.webservicex.net/ValidateEmail.asmx/IsValidEmail?Email='

pmail

INTO

w_string .

CALL METHOD CL_HTTP_CLIENT=>CREATE_BY_URL

EXPORTING

URL = w_string

• PROXY_HOST =

• PROXY_SERVICE =

• SSL_ID =

IMPORTING

CLIENT = http_client

• EXCEPTIONS

• ARGUMENT_NOT_FOUND = 1

• PLUGIN_NOT_ACTIVE = 2

• INTERNAL_ERROR = 3

• others = 4

.

IF SY-SUBRC <> 0.

• MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO

• WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.

ENDIF.

CALL METHOD http_client->SEND

• EXPORTING

• TIMEOUT = CO_TIMEOUT_DEFAULT

• EXCEPTIONS

• HTTP_COMMUNICATION_FAILURE = 1

• HTTP_INVALID_STATE = 2

• HTTP_PROCESSING_FAILED = 3

• HTTP_INVALID_TIMEOUT = 4

• others = 5

.

IF SY-SUBRC <> 0.

The above program says a run time error

Exception condition "HTTP_COMMUNICATION_FAILURE" raised.

Note:I have netconnection in another OS ie XP