Yes, with the Win98 drive connected.
Open XP's disk management. (Right click "My computer" > choose "Manage" > Disk Management)
To open boot.ini:
Click Start > Run - type
sysdm.cpl > click OK.
In system properties: Click the Advanced tab >
click Settings under Startup and Recovery >
Under System Startup, click Edit.
How to post a screenshot.
How to post an attachment.