Software To Edit Website?

[TryteHD]

Hey, my Dad's old website for his company is outdated with information, but still comes up highly on search rankings so he's decided to give it a bit of a make over so people can be directed to the new website. We have Dreamweaver already, would that work? Sorry, rookie at this stuff

Any help is much appreciated!

 

[n0ns3ns3]

any text editor will do the job, preferably with support for (programing language) formatting, highlighting and auto-completion support
but for noobs, dreamweaver is also fine