hi guys, im new to downloading computer games and after the installation prompt me for disc 2, i dont know what to do... can someone help me with this?

game which ur installing it has 2n cd 2 install thats why its asking 4 2nd disc

Yes as Suyog says, It is as simple as that.

You need to complete all downloads before installing the game.

i have all the discs in rar in a folder but when im installing they still ask for 2nd disc

game i've downloaded is the sims 2 which has 4 discs

i run setup.exe from disc one after 28% it prompts for disc 2.. how do i 'insert' disc 2 when its in rar form

You must install it using a virtual drive like UltraISO or any like.

all my files are in rar format.. there aren't any iso files

Extract it using WinRAR. I hope after extract it will come up into an ISO file.