Windows problem!!!

hi guys..
I hava some problem on windows, previously i have installed two OS (both are Windows XP), and then i removed both of them nd installed Windows XP in C drive..

Nw the problem is previosly i hava two OS so in boot menu 2 OS are displayed to select which one to start..after removing those 2 and installed XP in the boot menu still 2 OS are displaying...ang the second option is dummy (as on slctng, there is no OS to start)

How can i fix this problem as i need nt display the second option to select windows to start

Thanks and Regards
sai

Guys i am waiting for ur reply..anybody.....??

search for file with name Boot.ini

hi..,
its very Simple...
Log in to ur newly installed Xp...
After Login follow this...

1.Click @ Run Option [Windows button + R]
2.Start typing "msconfig" and press enter
3.And u will find a tab named "Boot"
4.The OS which u installed will be shown on the screen
5.Delete the one which u dont want...

I got it...then what i should i do dude?

"msconfig" is also not working...( it shows windows can not find msconfig.....)