I don't know how to do it with grep but you can use perl to make a really simple grep like program that will allow tabs. \t is the perl regex for tab.
Code:
#!/usr/bin/perl -w
#
use strict;

my($pattern, $filename) = @ARGV;

open (FIND, $filename) ||
        die "Can't open filename: $!";

while (<FIND> ) {
        $pattern =~ s/\"//g;

        if(/$pattern/) {
                print $_;
        }
}

exit 0;
just save and chmod it and use it like grep.

./program pattern filename

[ 18 April 2002: Message edited by: debiandude ]