Make sure that your server meets the minimum requirements of iSocial; only then you can run the script without any hassles. You need not know what any of these really mean. Just take a copy and send it to your host, they can tell you if the host meets the requirements or not.
The requirements to run iSocial are as follows:
safe_mode = off
register_globals = Off
open_basedir = (no value)
output_buffering = On
upload_max_filesize = 200M(or more)
post_max_size = 200M(or more)
max_execution_time = 0(Zero)
magic_gpc_quotes = 0(Zero)
max_input_time = 6000 (or more)
memory_limit = 6000 (or more)
error_reporting = E_ALL & ~E_NOTICE | E_STRICT
display_errors = on
file_uploads = on
session.gc_maxlifetime = 14000 (or more)
CURL,GD library and FreeType library modules need to be installed.