After spending hours reading post here on the forum I found the solution that worked for me, once I was able to get into lime wire by creating a new download folder. I used windows explorer to find and delete my origional shared folder (after I had moved all my files out!), after deleting the old folder I then recreated it and went to lime wire and set the newly recreated folder as my download folder, I also made sure that read only was not checked for this folder. I downloaded a few songs and all seems to be back to normal.
The new folder I had to create to get into lime wire, to get past the error message, once the above was working, I just deleted it.
I then transfered all my shared files back into the newly recreated shared folder.
And even though no one will admit it I think it was the media player 9 download that started this mess for me.
Thanks for all the info on the forums, I also found some things to block to prevent viruses