Well ricka I'll try, I,m no wireless expert but here goes
Download "acx100-0.2.0pre8_plus_fixes_29.tar.gz" into a folder in your home directory
Uncompress the file, on the command line navigate to the folder where you downloaded it and run
"tar -xzvf acx100-0.2.0pre8_plus_fixes_29.tar.gz"
This will give you a new folder "acx100-0.2.0pre8_plus_fixes_29"
Navigate to this folder "cd acx100-0.2.0pre8_plus_fixes_29"
Then enter "vi README" and you guessed it read, navigate through the document using UP or DOWN keys, to exit vi enter ":q"
The simplest way to build the driver and check if you have all the necessary components and Kernel options in place is simply run "make" on the command line while still in the acx100-0.2.0pre8_plus_fixes_29 folder, if it fails you will get a list errors which you will need to correct, if it succeeds then we'll move onto phase 2
That's a start for you, let me know the outcome