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I run Poser 8 on Windows 7 32bit with Intel Dual Core 3.2 GHz and 3 GB RAM. 

..... Probably I could have more RAM but it's not possible now so if anyone knows how to make Poser work a bit faster it would be great. Thanks in advance :)

32 bit systems do not address more than 3 GB of RAM.  Adding more will not improve situation.