To dual boot Mint and WinXP, you have a few ways
1. Using WinXP to controm MBR.
refer to this thread on how to change WinXP boot.ini to add Mintviewtopic.php?f=46&t=118207&p=653281&hilit=windows+boot.ini+#p653348
2. Using Default Mint boot loader to control MBR,
Mint14 uses grub2.00
and it should have already work during the installation.
Since yours is not working, one possibility is corrupted grub2 during installation.
In that case, you can do these
a. use simplest method, just reinstall grub2 to MBR
b. use a more sure method, download a repair disk and use it to repair your grubhttps://help.ubuntu.com/community/Boot-Repair
3. use other boot loader... not necessary unless above two method still do not work
By the way, I do not think EasyBCD can work on WinXP, at least that was what I learned sometime ago and they said it on their website, however, I am not too current on latest version, just go check their FAQ.