Apologies for the umpteenth rehash: Install issue on laptop

[Malachai]

Just want to apologize up front for this being who knows how many times it has been mentioned but I am completely unable to recall the proper way to describe my issues (hopefully only the two). First I am wanting to install Project 1999 on my laptop so I have the option of playing on my PC or my laptop not even remotely interested in two boxing. Second issue is unzipping/extracting the P99 files, when I try to unzip/extract the P99 files after successfully installing Titanium the files will not overwrite/replace the files in Titanium. One unzip program is 7 zip yes ancient I know but it's free and does what I need it to do and can't remember the other program, is there a (preferably free) program to extract the files with out issues or am I looking at something completely different? I'm sure there will more questions to help me pinpoint this and will answer them as I am able due to work schedule, thank you in advance for any help in getting me mobile to walk Norrath again. Lastly again I apologize for whatever iteration this is of a problem that has been addressed previously.