Tom, software[soft synth] use at a non expert level....I don't think it is possible...Jump into it and in no time you will become an expert user[you have no choice]..
If you ever tried the NI's B4, it will make you a believer..
If you think you would like to get started without spending a lot of bucks...try M=Audio's Key Rig[under $100]..
It gives you a Piano module, a Synth module, an Organ module[not bad], and a GM module...A great value..
Keep in mind you will need a host program like Forte, Sonar,Powertracks[new version] and most high end programs[Acid Pro 5 etc].
Forte works out the best for me[$70]..
Search the posts here at SZ, there is a lot of info..