Windows 7 Logonscreen shows Mine account & 'Other User'

[mothekiller]

Hello
when I start my laptop i get to the logon screen and it lets me choose My own administrator account and ''Other User'' and how do i delete or disable that ''Other User''

the picture above is how my logon is like



Thanks !!

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Specs
Acer 5520
3 GB RAM ddr2
120 GB HDD
Nvidia 7000m graphics