@Michael & Gordon: appreciate the replies - thank you.
As Michael suggested, he offered to setup two modes; one for brighter times and the other for lights-off (night) situation.
Now, I forgot to mention several things and I am sorry in advance for potentially basic below questions:
1) We have four source-display scenarios in our living room:
a) cable set-top-box >> ph10uk (5%)
b) 4 dishes (5 satellite coverage) >> prof revolution DVB-S2 8000 pci-e satellite card >> gts450 gpu inside the htpc >> ph10uk (5%)
c) htpc (using as a blu-ray and dvd player) with a gts 450 gpu (using mpc-hc + madvr + lav + haali) >> ph10uk (50%)
d) htpc (netflix) >> ph10uk (40%)
Let's assume having a calibrated display for a and b connections is not important for now, what would be my best/optimum process to calibrate our display for c and d connections?
2) IIRC, mpc-hc is ICC aware (though I couldn't find the option in the tray for "system wide" application - which is another problem for now, lol); so, I believe with a colorimeter and/or spectrophotometer and a suitable software I would be able to calibrate the monitor by myself (at least to a degree) - is this correct? This hopefully would solve the connection c...
3) Can anything be done for netflix (since I am using chrome and am not sure whether browsers are icc aware)?
4) What would be my best solution (budget wise - used or new) for $300, $500 and $1000 for above scenarios?
5) At some point in time, I am planning to calibrate photo printers, too. Would this change any solutions that you may offer to me?
Again, thanks a lot, I am continuously reading but at this point I am confused!