All my drums are from a program called Drum Kit From Hell ( drummer from Meshuggah ). They are supposedly thought upon as the most advanced drum program you can get ( Drum Kit from Hell Superior which has way more options and drum kits ).
If your computer can handle it i would go for drum kit from hell superior ( you need a huge hard drive and powerful pc ). DFH2 is good, but it eats up even more resources in Pro Tools ( a problem which is being fixed as we speak ).
To hear what Drum Kit from Hell superior is capable of lsiten to Catch 33 ( which was done with this program ) and also
www.myspace.com/tesseract and
www.myspace.com/thesafetyfire ( my band ).
The great thing about it, is that you can hook it up to a electric kit through midi and trigger the dfh sounds. So if you do get a chance to get a real drummers feel then you can use it still.
Anymore questions just ask.
PS. Yeah it is very easy to use. There are the simlified GM Kits which are mapped the same way as Midi kits are, which is the most hassle free. Then there are the more complex kits with more cymbals, mic bleeds etc.
As for inputting data, you have a pencil and you just draw in where you want you beats to be. That or use GP4 files and import the drums from someone elses hard work ( if you want premade beats, or beats from songs ).