Linux assistance

This is really starting to get to me, no matter what guide I follow the result is always the same. What I'm trying to do is dual boot LInux Mint LDE and WinXP SP3 using 2 HDDs. How do I go about this? I've tried using various guides that all seem to say something slightly different. The main problem being that GRUB doesn't appear it just boots straight into windows.

Here is my current partition set up.

Code (Text):

1. /dev/sda
2.        /dev/sda1 ntfs     20974mb
3.        free space           479133mb
4.  
5. /dev/sdb
6.        free space           500107mb

/dev/sda1 is obviously the winXP partition. I've left free space on the drive because I will likely upgrade to win7 at some point. /dev/sdb is empty and ready for Linux.

 

Thanks, that did the trick. I had to wipe off the WinXP partition and start again but atleast both OS are now capable of booting.