Works when mounted with D-tools but not when burnt to CD!

[Sam Leach]

I have backed up the game Battlefield 1942. So I have a .mdf and a .mds for each disc. When I mount the image file using Daemon tools it installs fine and plays fine but when I burn it to a CD it wont play (stays on load up pictute thing for ever) and wont install past 7% (It says media not found or something)
I burnt it with Alcohol 120% with these settings:
Write speed: max.
Write method: DAO/SAO <---might be problem?
Enable buffer underrun technology ticked and the rest un ticked
Datatype: customise

I have already waisted 1 CD so wanted to ask on here before I try different settings :S
Please answer people who are familiar with alcohol 120%, thanks