All you need to do is swap my map for yours in your halo trial maps folder. You can download my map from filefront.com or just google it by typing in halo trial cliff mod

or download it here—->http://files.moddb.com/882/

thanks for your email. i finally figured out that i need to extract the file using winRAR and then replace the bloodgulch.map file (Harddrive>Prgm Files>Microsoft Games>Halo Trial>Maps) with the one I extracted with winRAR.

Thanks,
appreciate the help.

i cant find the cliff mod on filefront. r there any other links?