You could make a ISO of the cd's and open them with Daemon tools...Then when installed just set Daemon tools to run the d2 exp iso and voila..It's driving like u have ur d2 cd in...The thin Daemon tools does, is that it makes a virtual cd cdrive, and when u then set a iso like d2 exp to run it looks like a cd drive and that u have ur d2 exp cd in it .... GL
all you gta do is pop in the cd, load up d2 then put them in the next comp, the cd doesnt have to be in to play, on battle net at least, unless you are paing