Lpc2000

As far as My knowledeg Message sequnce charts(MSC) are time driven 
representaion.State charts are event driven representation of of the 
system.Is it correct or not?
MSC are used to model the system component and Interface of 
software  architecture. Is it correct?
 MSC are used as a base  to designe the state machine diagram or 
not? 
Please clarify?
Can anybody help me to get acquintance with Software engineering 
process.