If I understand you , you say you want a "beat producing program" and you dont want to actually play drums , but play with a computer program. Cubase VST can be bought from most any online music supplier of any merit and it probably has a feature like that in it, theres also a program called"Band-in-a-box" that is an accompaniment program . I think though Sonic Foundry probably accomidates you hip hop, techno people the best, I would check them out first.
If you are starting very basic you can read my article in Epinions, I hope it helps.http://www.epinions.com/./inst-review-39A3-111711AD-3993310F-prod1
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Smitty
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Smitty