Question about data plots



Hello,

Is it possible to plot data with Maxima+Gnuplot?

For example, this is a simulation of a gaussian noise,

(C1) load(bessel)$ sample:makelist([i,gauss(0,1)],i,1,50)$

Now, with

(C2) openplot_curves([sample]);

I get a graphical representation of my data set in W.Schelter's plotting 
window, but can I get the same result in Gnuplot?

I've read in the man, "describe(plot)", something about "xgraph_curves", 
but...

(C3) xgraph_curves([sample]);

sh: line 1: xgraph: command not found
(D3)                                  0


... no results.

The same with "plot2d([sample])" or "plot2d(sample)"

If there is no way to obtain what I want, is it possible to write my own 
function in Maxima to do it? I mean something like

picasso(data):=
  block([var1,....],
    blah, blah, ...)$


Could you help me, please?

Thank you.

Mario.