finally found it after going around the block to look for it its in
include/languages/english/signup.lang
starting on line 73 ending line 78
this is the welcome pm
PHP Code:
'welcomepmbody' =>'Congratulations {1},
You are now a member of {2}, we would like to take this opportunity to say hello and welcome to {2}!
Please be sure to read the Rules: ({3}/rules.php) and the Faq: ({3}/faq.php#dl8) and be sure to stop by the Forums: ({3}/tsf_forums) and say Hello!
Enjoy your Stay.
The Staff of {2}',