Caz
Sorry for delay had to have a fiew zzzzzzzzz
It sounds like possably a corrupt java download, &/or L/W Prefs folder prob
First! close L/W completly, then Go,
START/My Computer/local disc C:/ Documents & settings/Your User Name/Application Data
Now Delete the LimeWire Folder.
Now! Go to,
START/Set Program Access/Change or Remove Programs,
now completely remove all versions of java.
Now! Use this Link to get (jre 6) Use the off line installer NOT the (recormended) one,
http://java.sun.com/javase/downloads/index.jsp
Caz do this, exactly like it says if you get stuck Shout.
Let us know if that works,
Peace.