Webuser Forums: Add ons for Celestia

I recently downloaded Celestia from the CD-ROM that came with issue 176,and I`m really impressed,butI would just like to know how to use the add-ons available.I downloaded a realistic earth texture but do not know how to add it to the Celestia program.As I have only had a computer for 6 months I`m not sure what the next step is . Maybe you could include downloading an add-on file from start to finish in one of your magazine workshops.I`ve tried searching the web for advice,but in most cases it is assumed you are familiar with the basic processes involved.I`m sure there are many people out there who have just got Celestia now and would find the article very helpful.

Dell Inspiron 6400 , 1.73Ghz,1014Mb RAM ,Intel Pentium Dual Core with Intel(R) Graphics Media accelerator and Vista Home Basic.

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Dell Inspiron 6400,Intel(R)CPU@1.73gHZ,2GIG RAM,Intel(R)Graphics Media Accelerator,Vista Home Basic.