How many LastChaos windows can i run at the same time?

Hi
i want to know how many Last Chaos i can run at the same time in one computer , and is there something available to reduce the cpu/ram usage by lastchaos ?

Depends on your Computer:
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check the post from Vatasto :p
About the second Question:
I dont think there is something avaible yet. However, try to minimize
some Clients trough the Task manager and the ram usage should
go down :p

ok thanks...
an other thing: how is possible to run last chaos in 640x480 mode? at this moment the lowest resolution is 800x600 -.-