Does anyone know of any patches that will make pmdg 737 800/900 compatible with FSX or will I have to revert back to FS9?

It's been tried, with limited success reported in this forum. However, the 737NG will not work as intended in FSX. I keep both fs9 and fsx active until the 737NGX comes out... probably not for awhile.

Many thanks for your reply.I'm always a little apprehensive about posting questions through the forum, as I am so busy working that I don't often get the time to keep up with my flight simming and indeed, the forum issues.As a result of your reply and update, I think I'll re-install fs2004 and accept the consequences of the extra work involved with re-installing tileproxy too.I think I preferred 2004 anyway!