1) norton/zonealarm
2) spybot S&D/ad-aware
3) Photoshop/ImageReady CS and also a very good program to use is Illustrator CS.. has other options and in a combination with PS it's very great
4) VIDEO/AUDIO: Premiere 6.5/windows movie maker/virtual dub mod/EO video/helix producer/camtasia studio
AUDIO: adobe audition is by far the best program, also use dBpowerAMP for converting al types to other types of audio files (mp3,wav,ogg,wma,ra,aac ect)
5) no idea at all
A other programs I suggest is Flash MX 2004