newbe- custom in vmware

i have to use vmware(not qemu or virtualbox)
but i can't understand why i can't open custom network with virtual
net adapter settled from vmnet2 to vmnet7.
When i boot a gui tellme: could not open /dev/vmnetX no such like a
file or a directory.
I can't find response also in vmnet forum( i have edited /etc/init.d/
vmnet with a script but don't work)

.