Frontpage Problem With Special URL Characters

[rmmf.1977]

Hi,

I'm having a problem with Frontpage when i need to specify a URL like:

http://rep.bancobpi.pt/bpicampanhas/redirect.asp?REF={E0EC11AD-221D-49E7-A082-97554BFC5C1E}&OP=50&URLR=http://www.bancobpi.pt/pagina.asp?s=1&a=4&f=307&opt=f

The problem is that FrontPage e replacing '%26' for '&' and in this
case, the URL becomes invalid because it has parameters of parameters.

Is there a way to disable this feature?
How can i handle this situation?

Thanks.

Rui Ferreira.