sun java web server 7 - url redirect with "+" in the URL

I have been asked to provide a URL redirect in sun java web server for an initial path that includes a "+" in its path

eg.

/ipd+ http://www.deja.com

That doesn't work - I imagine that the "+" is not a valid character (or more to the point is a special character).

I've tried to escape it with one and two "\" - to no avail.

Any suggestions as to how this can be done? If at all?

cheers

Ian
.