mounting IP from NAS

[Barnosch]

Now in english, again.

I have problems to mount my NAS Volume which shares with NFS .

The NFS Server on the NAS is up and running.
Normally i should add the share through the WL500gx through a simple mount.
I configured the NFS Server to allow from any IP.
showmount 192.168.1.20 -e
shows:
Hosts on 192.168.1.20:
192.168.1.1

x.x.1.20 is the NAS
x.x.1.1 is the router

So the NFS Client on the router seems to work.
But i still can´t mount the share.
Is there something wrong with the NFS Client on the router?
I can not install nfs-utils trough ipkg, because it isn't available.
Anyone an idea?
or a simple workaround without recompiling the oleg firmware with nfs support?

Oleg?