mono. cardioid. about 8" from your mouth, with pop screen if you have one. generally, an LDC is the mic of choice for voice over, but you can do just fine with any decent condenser or even a good dynamic. you will want to add a bit of chamber reverb in post to give some space, perhaps a tad of short delay, just enough to be not noticeable. if you vary much, you may want to compress a bit also. best advice, however, is to find a nice example of voice over recording similar to what you want to acheive, and try to match it with your post processing - it will give you a general feel for overall eq (you will probably want to bump the low-mids and a small rolloff on top end to keep it mellow), verb space, compression, etc.