Carbing question for corny kegs

[RDatsun]

I brewed a Belgian Specialty , I am outta the secondary going into kegs would like to carb this at about 2.5 or close . Sample tasted very good my question is how much corn sugar or DME to use to naturally carb this gonna sit awhile in colder room for month or so . Never let 1 sit and carb naturally b 4 any help would be appreciated thanks,Jeff

 

[Justibone]

You should carb it at room temperature. In a cold room it will take longer.

http://hbd.org/cgi-bin/recipator/recipator/carbonation.html