wifi-radar "could not lauch....

[attilab]

did a bunch of installation,
wifi-radar "could not launch menu item" "Failed to execute child process "su-to-root" (no such file or directory)"
what this means? I didn't install it?
how to make it work? I need to adjust my router antenna's, signal is just way to week in the house

[attilab]

I just noticed, this is not what I want.
I need a numbers for signal strenght not bars
anybody could direct me to application?

[gentagelse]

Can't you just pull the cursor over the bars, and see the signal strength in percents?

[attilab]

??
right now the default wireless-wired (NetworkManager Applet 0.7.0) console, inside no numbers just some 15 bars (the available signals from neigbourhood), how can I make it as you sad with numbers? It wood be great.
also
just noticed, when I rest the cursor on the network (NetworkManager Applet 0.7.0) button, showing me 67%
I am sitting @ my kitchen table with my laptop at this moment, my own wifi signal strength is just slightly better than the others, running downstairs to basement to adjust the router (Linksys WRT350N) antennas (2x straight rods and one flat in the middle) to find some improvement.
but anyway, is it possible to make it to show the % right there inside console?
many thanks in advance..