Hmm... ok
What kind of airstrip, asphalt? dirt? concrete? same for the taxiways? orientation (N-S, E-W or both)? Anything else, such as a tarmac/flightline? What resolution? (I prefer 512x512) and what sand texture are you using, there are quite a few of them, well a lot less at 512x512
If you have any pictures or even a layout plan that would help too.
You can PM me if you like, or send me an email to keith705@yahoo.com as long as you want high-res textures I can probably do it for you