Does anyone know how to put Windows XP Pro Sp2 on External HDD

Dear Support
Does anyone know how I can put Windows Xp Pro SP2 on an External HDD?

Let's see now.. How about we use this huge search box at the top of this very web page and type in some magic words like "install windows xp usb drive". I know this sounds utopical, but I have a feeling that you just might get an answer from there..

Hey I found something hehe

I will try later on today
This lil thing seems easy, I can hope it will work thought

Darn If I could I would post the topic but dunno how to post the link

The problem is now I get a blue screen By the way setup won't even load

I have did as they instructed it copied fine , the setup won't even load and I set it to Primary Active NTFS heh, "it" gives me blue screen hehe
It just adds to boot.ini
multi(0)disk(0)rdisk(1)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" /noexecute=optin /fastdetect

I did with the cd Boot up and install on External didn work

I boot it up With the cd Formatted it And copy it Now when I restart it it didn't work
All I did was messed up my boot.ini, so what I did to get back to win I'm atm I did this in recovery console, bootcfg /rebuild click yes and type /FastDetect You could try hitting enter, then I edited my boot.ini so it be back at normal like it was before
But still no xp yet I will try Wednesday