When i select a file my puter shuts down
 

when i select certain files for downloading my computer immediately goe's to a black screen then i get the blue screen citing errors i then have to reboot my computer.

i can have 3-4 downloads going smoothly then when i select the next file as soon as i click on it the black screen appears after a few seconds the blue screen appears displaying the msg to hit any key to continue but hitting the keys doe's nothing i then have to shut down disconnect my computer from the internet and reboot, open limewire and delete all the files that were downloading after that i have to shut down re-connect to my modem boot the computer up and only then am i able to get back onto limewire.......any suggestions as to what's going on ?

The cause is not LW, but LW is simply the catalyst. The issue is a problem with your computer. It is generally out of date drivers, or drivers clashing, or bad ram or overheating, etc. See Limewire and Blue Screen of Death (click on link)