nfs mount rw

[Warren Head]

Hi,

I am trying to get write access on a nfs share.
As far as I can tell by reading around, this should be the syntax in the
exports file:

/maptoshare    machinetoshareto(rw)

When I -HUP mountd though, it tells me that the line in the exports file is
wrong.
So I change it into this:
/maptoshare    machinetoshareto

and then all is fine. I can mount it as well, but I don't have writing
access, only reading.

How should I specify the (rw) part?

Thanks,

Warren