realy big question???

[kaktous]

hi,friends....
it's realy big question for me?
i download some no-CD/No-DVD file frome this site.(Like Matrix,Total overdose,FIFA06 and etc.)
most of this file have litlle size like 240KB or 500KB or 4MB ...
when i unrar this mini-image ,their expand to big file 1.3GB or 3.3GB(WOW).
there is 2 file .mdf and .mds .
mount the .mds file with Daemon4 whit enable all option(absolutly SecureRom). it mount in the virtual drive
there is some file like Setup and etc. whit no icon.
when i try to run the setup just a dos-window shown and close.with an error:"Program too big to fit in memory".
i set the campatiblity with win2000,use antiblax,use SR7.Stopv1.0.exe,even use antiblah stil not working.

there is a realy big question!

what is the mini-image? is it realy content of the game? or just an empty file?
if these are an empty file whay the size of this file is 1 or 2 or 3 GB?why?
if they are the true file? how can i recover them?..
for playing the game i must have the realy game cd?

please explain this for me....

sorry for my poor english!