locating a string pattern in a tree

[amit4g]

Hi,

How can i find a specific string pattern in the entire tree(several directories containing multiple sub directories ) ?
$ find ./ -type f |grep "<pattern>" will not do as it will just give the names of directories (relative pathname containing the pattern).

grepping for the pattern in a directory containing files only work,but this is not what i want.
i need to look for the specific <pattern> in the entire tree .

"xargs" might do the job,but i've never used it before : (

Thanks,
~amit

[amit4g]

i guess i found what i was looking for
find ./ -type f|xargs grep <pattern>|more