I cannot help you with the guitar simulation cause I am palying guitar and never bothered with this stuff.
But for Rock music and for music recording in general you will have to search for sequencer.
Top programs that I have used are Cybase , Sonar but they are highly profesional and expensive.
There is a free vertion of Cubase named Cabasis it's really good for free.
Also for loops and drums you can use reason and fruity loops but this is also comercial products. Fruity Loops it's litle bit cheap but to much anprofesional tool, this is good thought beacause it's very easy to use and to promissing one software evry update make's it really better.
My last thoughts are that If you never recorded or writed music get a copy of Cubasis and WaveLab Lite and the trial of the fruity Loops.
But for Rock music and for music recording in general you will have to search for sequencer.
Top programs that I have used are Cybase , Sonar but they are highly profesional and expensive.
There is a free vertion of Cubase named Cabasis it's really good for free.
Also for loops and drums you can use reason and fruity loops but this is also comercial products. Fruity Loops it's litle bit cheap but to much anprofesional tool, this is good thought beacause it's very easy to use and to promissing one software evry update make's it really better.
My last thoughts are that If you never recorded or writed music get a copy of Cubasis and WaveLab Lite and the trial of the fruity Loops.