OK, to edit your startup options, do the following:

RIGHT-CLICK on My Computer
CLICK on Properties
CLICK the Advanced Tab
In the Startup and Recovery section, click SETTINGS
This will open the Startup and Recovery dialog box
In there, click on the EDIT button
This will open your boot.ini file in Notepad
You boot.ini file should look something like this:

[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Micro soft Windows XP Professional" /noexecute=optin /fastdetect
[boot loader]
timeout=5
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOW S

Except yours probably has 2 lines under the [operating systems] section
From here, you can just highlight and delete the line for the XP load on the hard drive you removed, leaving you with only 1 option

Now, to disable the login screen at bootup, look at this link, it will save me some time

http://www.petri.co.il/disable_the_w..._in_xp_pro.htm

I hope that works for you.

Bart