If your ICS is working I am assuming your network connection is established. That is all you need for control of files and cd-rom of the other computer.
First, you can not control the dial up of the other computer, for you the connection to the internet is just there. But if you have logged on using "client for microsoft networks" and have checked "file and printer sharing" you can enable sharing of all hardrives, floppys, cd-roms, and printers.
Right click Neighborhood Networks Icon, then goto properties, check for these settings.
Then double click my computer, and right click your c-drive, under the menu select sharing... Enable it and you are on you way. Do the same for your cd, and printer....
hope it helped.