SketchUp to hammer help

i need help to export a model to vmf

but when I try to export it says

group everything.

i have group everything but it still says

you need to make the whole map smaller, the scale between the programs probally changes a lot.

what scale do hammer use?

[editline]2nd June 2011[/editline]

can some one export the model to vmf for me ?

Just keep scaling it down till it works, just keep halving it.