Hi QuiteAnnoyed.
I'm taking it already, that you have turned XP firewall OFF,
OK!! Roll back your java to JRE) 5.0 Update 12
Now! Go to,
START/Set Program Access/Change or Remove Programs,
now completely remove all versions of java.
Re BOOT Your computer NOW.
Now! Use this Blue Link to get "Java Runtime Environment (JRE) 5.0 Update 12" Use the off line installer, NOT the (recommended) one, 4th one down.
Java SE Downloads - Previous Release - JDK 5
When Download is completed.
Disconnect from internet, close ALL apps n reinstall java.
If that don't fix it, I would give your ISP a ring & ask what is their policy on P2P
or more to the point Limewire.
Peace.