? can I warm cold beer, without ruining it

I have a cold (34 F) corny keg in my refrigerator. It is full of an American Pale Ale. I would like to remove it and leave it in the basement (68 F). Will this make ruin, or make my beer taste bad. I have a chill box in my bar I want to set up. The keg will remain at 68 F and the beer will travel through the coil in the chill box, out the faucet and into my glass. Should I keep my cold keg cold or can I let it warm up, without any off flavors or skunkiness forming in my keg.

Well moving the beer from 34F to 68F should not "skunk" it, only oxygen would do that. As long as the beer is in a keg and sealed under CO2 pressure, the taste should not change.
BUT......................
The temperature change may make the beer foam for the first few glasses you pour.
Warm (or warmer) beer vents CO2 much more easily then "COLD" beer does. (open a warm beer some time vs a cold one and see the difference).
As a precaution personally " I" would let the beer sit at 68F for a few days then hook up the CO2 and bleed off all the pressure from the keg then re pressurize it to your normal serving pressure (8 to 12 psi?). The keg will probably have more CO2 in the headspace due to the temperature change - making it overly pressurized.
That would take care of any excess pressure caused by the temperature change.
The cold box should chill the beer back down to drinking temp as it is poured.
Just my 02 cents.............
Good luck and keep brewing...

So let me pose this question. Is it possible to brew beer and store it for periods of time in soda kegs unrefrigerated until you have room in your cooler for it? I just built my fist kegerator unfortunately it only holds one keg at a time and I want to get a few kegs ahead since it take one good party to start going through kegs.

temperature of storage (as long as it is room temp or lower) should not matter.
And as Phil noted, Sunlight skunks beer and oxygen oxidizes it, both are unlikely in a sealed keg with beer pressurized with CO2.

temperature. If you live where it`s cold, you can keep your kegs by a window that`s cracked open. I`m having a big birthday party next week and I`ve brewed seven different batches of beer for it. The kegs are currently sitting in a room with one window cracked open and a second window with a fan blowing out. The room`s been staying between 45 and 50 degrees.