A way to play backgammon online between iphone and pc?

There are many iphone app's for online backgammon, however does anybody know an online backgammon server which can be shared between iphone and pc? This is appreciating that iphone struggles with java and flash!

Alternatively is there an 'editable' backgammon board which can be e-mailed back and forth regardless of platform?

Its unlikely to be able to, because they are completely different platforms. Another reason being that as you said, iphone struggles with java and flash so you're unlikely to find the right player system to be able to do it with the computer as the other player.