svgalib problem

[St Xaviers College]

Hello,

        I have a Slackware Linux 96 on my machine installed. My "svgalib" 
does not work, if not logged in as root. For instance to run "tmview" --- 
a dvi-previewer with linux/svgalib to preview .dvi files I have to open 
another session as a root, and while I try to run it otherwise it says : 
"svgalib : Cannot get I/O permissions."

        What need I do to run as any user ?

        Thanks in advance.

Partha Pratim Ghosh