I assume you are bsed in Europe somewhere, probably the UK, in which case most OFA remotes sold there have a built in code for the Pace box. If you get a telephone-upgradeable remote you can get the code added even if it isn't pre-installed.
You won't be able to learn the Pace signals with any learning remote though, so you do need a built in code.
Rob
http://www.hifi-remote.com