How do I increase the allowable datasize for a user?

[John P. Eisenmenger]

Hardware: VAXstation 3200
OS:	  Ultrix 3.1

How do I go about increasing the allowed datasize for a user?  I
reconfigured the kernel with dmmin and dmmax changed to allow a
large data segment, but those changes did not reveal themselves
to the C shell limits.  This user needs a virtual space of about
128MB, but is presently limited to about 21MB.  Is it possible to
get a data segment that large, and what do I need to change in
order to allow it?

Thanks for all replies in advance,
	-John