I am trying to download some files but they have separated into two parts, and I do not know what to do to extract them because I keep getting the message I need the data from part 2 when I am trying to extract the data from Part 1 and visa versa.
RAR files can be unpacked with a program called WINWAR.
You can download it free from the web.
Usually, if it is in 2 parts, if you unpack the first part it should then automatically unpack the second part as well (assuming they are part 1 and part 2 of the same package)