The answer to your question is simple mate, but I am afraid it will not make you happy
Minimum System Requirements
The minimum requirement specifications will allow you run the Entropia Universe application; however for the best possible experience we recommend that you lower some of graphic options in the Options panel of the Login Window. Read more in the Start, Login & Connection Guide.
* Windows 2000 or later.
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* 512 MB RAM.
* 1.7 GHz Intel P4, AMD Athlon XP 1700+.
* NVIDIA GeForce FX series or higher, ATI Radeon R300 Series, (96xx or higher.).**
* Latest NVIDIA driver - Get it here. Latest ATI driver - Get it here.
* Direct X compatible sound device.
* 3 GB of free Hard Drive space.
* Direct X version 9.0C.
* Broadband internet connection (ADSL or better).
*Windows Vista not supported yet.
**(Card that supports Shader 1.1 or higher)
N.B. As the Entropia Universe is under continual development, hardware requirements may change over time.