Softmod Hard Drive help

I've been softmodding for a while and I just got a huge hard drive to put in my Xbox. I bought it off line with the MS Dashboard Already on it and ready to go. Stupid me thought that that’s all I needed.
Its blinking red and green with a 5 error code. So it needs to be locked right? Can someone please point me to a good tutorial or at least in the right direction.
I know I’m noobin' it up here guys and I’m sorry about that.
Any help would be greatly appreciated, Thanks.

I usually use Splinter Cell to mod. Thanks again.

 

Hey pm me your msn addy and I'll try and help you. Also get rid of your double post.

 

I can get my HD password useing Evox and I have xboxhdmV1.9.
what next??

I don't have msn. mikevxpx@hotmail.com