Use EasyBCD 2.0 latest build
1.7 expects you to understand and carry out additional manual tasks to dual boot XP.
2.0 automates the whole process.
The drive information is deliberately suppressed. To enter the XP drive letter would be wrong.
Just add an XP entry, and let EasyBCD 2.0 auto-configure when it offers.
Read the sticky thread for more detail.