Try this. It's untested, but should work according to the docs.

my $table = $IE->getTable('id:','G_ctl00xContentPlaceHolder1xUserContr
+ol1xGrid1xGrid');

my $targetCell = $table->tableCells(2,2);

my $cltext = $targetCell->cellText;
print "cltext=$cltext\n"
[download]

Regards
Luke