Try UNINSTALLING ALL versions of Java from the add/remove programs and then re-install the JRE 5.11 offline version....
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11. :D

do i have to uninstall lime wire before i install java back ??

If it were me I would uninstall Limewire, install Java and then a fresh install for Limewire. If you do uninstall Limewire make sure you go to Start > All Programs > Limewire > uninstall. DO NOT Uninstall Limewire from Add/Remove Programs.

i tried it but it still gives the same message

Try deleting your preference folder/s...This will reset your configurations back to default and get rid of any corruption that may of happened...

Fixes for Limewire when LW isn't operating as it should
LimeWire Pref Folder in Vista

Hope this helps.

i can't vind the folder. i tried step 4,.... but it still won't work. i tried to lo let my pc search for it but he can't find it as well. I'm so desperate!

i can't find the folder i let my pc search for it but even he can't find it. i tried step 4,... and that doesn't work. i really hope that this will work. i'm so desperate.

what virsion LW do you have?

4.12.11.0