KickAss IDE, is a great setup. On my Win7 machine, I really enjoy using it. After years of mixed tools for c64 dev, having a full IDE is amazing. If you are into doing some c64 coding on a windows machine, pick it up!
It’s too bad there isn’t a OSX port, I ended up using the Kick Assembler with UltraEdit on OSX.
The installer is at CDSB: http://csdb.dk/release/?id=116290