REMOVING HISS FROM A SONG?

I have an old Moody Blue's song with Denny Laine called "Stop."  It has a huge amount of hiss at the beginning.  The 2 CD claims to be remastered.  I cannot remove the hiss using adobe Audition 1.5 which has worked great on other songs.  I did some searching for tutorials and no luck.  One tutorial mentioned the paint brush using the Spectral View.  Does 1.5 have the pain brush option?  Any suggestions and thanks.  Ed