flight simulator doesn't work

HELP !!!
I've just bought flight sim' and when I start it a messega sais me 'insert cd n°4'
I do it but it gives me the same message anyway !!
Please help me i neeeeed your help !

See if this works for you.
If not find the crack and use that. We have it but downloading is for members only.
Remember there are two cracks, one for the patched version (9.1) and one for the un-patched version (9.o).

http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=EAE20F0F-C41C-44FE-84CE-1DF707D7A2E9

thank you for your help. i downloaded the file above but...
I DOESN'T WORK ANYWAY Please help me finding the solution to my problem !

Read this over and see if it helps.

http://support.microsoft.com/?kbid=228985