hello there
my set-up is simelar but i have the haug 1600 w the ir blaster & the firefly remote.
your processer is a bit better(but mine is a coredueo),so all in all we are simelar.
we have comcast withtthe same box. i tryed to use a seral cable,no go!! then i got the ir blaster & it works fine. i got my ir blaster with my card so i cant say how to just get the blaster. i would check the beyondtv sight first.(do you have beyond media?they have one with remote i believe??) then check everywhere else for sales. good luck & yes all is fine here,even the wife & kids understand it!!