electronics chemistry and opensource workbench

[Sean Wagner]

Ok I have a few qestions.

Does anyone know of a good electrical engineering program that is open source? 
Something like multisim would do nicely...

Also I am new to the phoenix area and Im trying to find some good stores that 
sell chemicals and chemistry supplies and one that sells a wide variety of 
electronic components ( individual components i.e. capacitors inductors 
semiconductors NOT electronic systems like computers t.v radios etc.) If 
anyone can give me a heads up I would appreciate it theres some thing I want 
to build.

Thanks
Sean