How to completely delete iMesh?

How can I delete iMesh in my program file folder? Whenever I try deleting it, this message keeps on appearing,
"Cannot delete Browserconnection.dll: Access is denied. Make sure the disk is not full or write-protected and that the file is not currently in use."
I am sure that there are no other programs open whenever I am trying to delete it but, how come I am getting this message? Are there some other ways that you can suggest? I really wanted to get rid of iMesh in my folder. Please help. Thank you.
