It does indeed belong in the BA forum. Perhaps our esteemed, but somewhat invisible, moderator will be along shortly to move it.
But in the meantime, the answer may also depend on which version of the BAEC you are a member of. For the mainland European version you need 150,000 miles. I don't understand what you mean by "convert" - you simply call BAEC and arrange the award ticket exactly as you would for one on a BA flight.
[This message has been edited by christep (edited 02-18-2003).]