RSDLIte 4.8 and 4.9 needs cd to insatll??

[DroidDiord]

HELP! every time i try to install RSDLite 4.8 or 9 i extract the .zip open it up install and then it say this part you are trying to insatll is on a cd? insert cd??? then it dont install becausei have no cd??!!! and i have RSDLite 4.1 but everytime i start it fails idk though if i have everything i need for it to work right?!!! please help.