I recently reinstaled FS2002, along with most of my addons, scenery, planes ex.... but can't remember how to increase the cruising speed beyond 340 KIA. Can you help?

Try setting your speed option to 'indicated air speed,' instead of 'true air speed.' I think this is located under the realism tab of the options, but I am not sure.

Thanks Fred,That was preaty simple,thank you again.

No problem, glad it helped :)