[GRASSLIST:5392] A v.buffer ?

[Soil & Water Lab.]

Hello,
I'd like to draw an area with a given thickness around a vector line (like, 
tha area 10m away from a river).
Is there any vector command that could correspond to the raster command 
r.buffer ? I tried a combo "v.to.rast / r.buffer / r.poly", but of course, 
the result is awfully aliased...
Any idea (even involving some scripting) will be more than welcome
Thanx
P.

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Soil and Water Laboratory
Biological and Environmental Engineering Department
Cornell University
Riley-Robb Hall
ITHACA, NY 14853 - USA