Vista Instalation Unsucessful?

When I Try to install windows vista home premium on my pc, it gets almost complete and restarts. It says the message windows failed to start ndisrd.sys missing or corrupt and displays the error code 0xc0000098. Any Ideas? I have all the minimum requirements for vista and I am using a external DVD Drive. I am 11 years old and I got vista for my birthday and mum and step dad has just spent alot of money on it and i am really upset, so please could you help me.