Ok, I keep getting an error message stating that "Limewire was unable to write a necessary file because you do not have the necessary permissions" what do I need to do? Please help!!!!

Reinstall Java using the offline installer here
http://www.java.com/en/download/manual.jsp
Remove your old Java version (add/remove programs) before installing the new version.

Delete your LW preferences folder when LW is closed. Instructions here
Fixes for LimeWire

See if that fixes things!

Thank you so much!!!! It is now fixed and I can enjoy limewire.

Thanks for letting us know

Ok I get a different message saying

"One or more necessary files appear to be invalid.
This is generally caused by a corrupted installation.
Please try downloading and installing LiveWire again...... and so on"

but when I try to download Limewire again it asks me to unistall the Limewire thats already on my computer and half way through that it gives me another error message saying it couldn't finish uninstalling cause something was missing or something was corrupted can anyone help with that?

Are you trying to install LW using it's offline installer? That's the best one to use, not the online (recommended) one.

Try this:
Download the latest Java JRE using the offline installer, see point 1 in the thread below. Remove your current Java version before you install the new one.
Fixes for LimeWire

Now download & install LW, make sure to use the offline installer.

Otherwise, try deleting LW's preferences folder. That's points 2 & 3 in the fixes thread.