Master VO

I'm fairly new to the field and wondered if you might be able to give me some advice on recording at home.  Right now, I am recording with NCH Sound Pad recording software.  Would you know of another kind of software available where I could mix background effects (music, etc.) to enhance the quality of the audition? 

Thank you.

I want to get started in Voice over. All I have right now is a Labtec Microphone that I bought on the shelf of a local Wal-Mart store of mine and I am really under the impression that that might not be considered adequate enough by seekers of professional voice-over talent.

I would like to know if professional home studio equipment (such as a professional microphone, audio console board, etc.) are needed or not perform voice-over/narration works at your home for whatever job you eventually land.

I have a question regarding mics. For studio quality do I need a class A large diaphram condenser mic? If so what do you suggest? Also am I right in saying that you can combine a preamp and sound card in one unit like the RME fireface 400, thus needing only a basic firewire card to get the signal into your PC?

cheers!