Session Server error

Hi guys, i have a problem. let the image of the problem:

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Please days ago I'm with this error, and I can not fix it. Hopefully someone can help ... u.u

Greetings to all.:confused:

additional data:

CPU: 4core @ 2.6 Ghz.
RAM: 4 Gb DDR3 800Mhz
S.O: Win XP SP3.
SQL: SQL Server 2000 SP4