access denied to read user.dir

I have been make my firset jnlp

but can't lunch because this error

java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)

how I can get applecation permission

to read some data from user pc

like creat net connection or read file etc...

tell me the solution

thanks....

[359 byte] By [ghhd_7a] at [2007-11-27 8:40:08]