Hi, not being very computer literate, my question may sound strange. While surfing this website under free software links, came to pdf creator, to use instead of adobe. I have adobe air, reader, and flashplayer installed. The only reason I have flash installed is to listen to things on youtube and some emails. reader and air came together and I installed them because they were on the first pc I ever used, thought I needed them. Now the question: what is a pdf reader of creator and do I need one, and can I just remove air and reader as to my knowledge I have never used them, but once, when I went to dell. support and was viewing the manual for a dimension 3000, and it had to load, I think it said pdf, do not remember. Thanks for any assistance. Liz.