Recording..(help)

[Hisao]

I try to make my own music,yeah i've already got my own beat&lyric but the problem is when i record my voice in the computer.It seems not in order,i mean the voice is really different from what i heard.When i go raspy voice,after i playback its a sissy voice just came out.And i dont know that voice,i know that's not mine..okay to cut it short,do you guys know what kind of software should i use to do the recording..Or i should have a mic like 50 cent or in the movie hustle&flow?