please help error loading operating system

Hi I have been trying all day to dual boot using the tutorial and no success.
I have windows 7 install on my computer. I want to have windows xp.
Now I have shrink my hard drive so I have 2 partitions now. Ok the problem is When I boot xp I goto install on D:/ the new partition it then copies all the files to that hard drive all good so then it wants to restart which is normal.
Then When it reboots it will say error loading operating system or just nothing.
Then I cant even Run windows 7 I have to delete that partition on windows xp and then put windows 7 and repair startup and Im back on again. It has to do something with the boot loader or something because I reckon Its trying to do start windows 7 but there is xp trying to install it self. Im not sure but I think I have tried every idea.
I have tried 2 different cds of xp.

Is Partition D what you are trying to install XP on?

yes

This excellent tutorial has step by step how to install a dual boot. Use Method 2 to install XP last:

Dual Boot Installation with Windows 7 and XP

yes I have tried doing that tutorial

mitch04 said:

yes

I would make it a bit bigger.

Are you using partition Wizard?

Also,format and delete partition d and then shrink c a bit more,create new partition using from the free space,format and then run the boot disc again.

By chance did you burn the disc yourself?
If you did try a lower burn speed.

Um yes through that computer management. See the pictures I uploaded They look right don't they? Im just thinking Should I install the boot loader now Or do I have to do it after xp is installed? It has to be something like that windows 7 wants to start but windows xp trying to install aswell and just hangs like that?

Minotar said:

mitch04 said:

yes

I would make it a bit bigger.

Are you using partition Wizard?

agreed.

Use a partition manager like Partition Wizard to srhink the WIn7 partition a bit and expand the XP.

Thanks for the replies.
I did exactly on that tutorial told me too should i download a third party program like Partition Wizard is a Windows based FREE Partition Manager. It works as partition magic and supports Windows 2000/XP/2003/Vista/2008 server and Windows 7. FREE for Home and Business user.. how much more larger should I put it too? Its just xp?
thanks again.
Minotar I am doing the bootloader now because it says do it after. So I will give that ago. When I go add type i should put windows xp then drive D:/ Not C:/ yeah thats right?


Update: I will go try that now I will be back in 10 mins