Exchange 2000 on 2000?????

well this is my dilema, i need to network a respectable amount of pc’s together and set the network up to a mail server. for now all i need is intrAnet email i won’t have any internet email coming in or going out.
now to my point, i am at the verybeginning stages of setting up this mail server, the only problem is that i need all this together on one server……..this server will have 2000 server as the OS, exchange 2000 as the mail server and the DC all have to be together. all i keep reading about is how dangerous this can be, not so much the 2000 OS and exchange but making the server the DC, can any one give me any advice??
thanks