The collected works of lparsons

This is probably one of the dumbest questions I can ask, but I'm still very new so I'll ask it now. I see other users who have little icons to show what systems they have/use/whatever. I checked signature options and didn't see it there. Am I barking up the wrong tree?

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Current flock, after the Altix 3000 and Altix 350:
:Fuel: :Fuel: :Fuel: :Fuel: :Octane: :Octane: :O2: :Octane2:
Thanks! I probably just didn't stitch the right search function together to find that one on my own.

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Current flock, after the Altix 3000 and Altix 350:
:Fuel: :Fuel: :Fuel: :Fuel: :Octane: :Octane: :O2: :Octane2:
Is there a way to display the icons upside-down (to indicate non-functioning SGIs)?
Currently, in ascending order of (my) time consumption -
:Fuel: :Fuel: :Fuel: :Fuel: :Octane: :Octane: :O2: :Octane2: :AltixDS: :A350R: