Lubuntu or Xubuntu 12.04 are better for that machine IMHO
http://www.linlap.com/dell_inspiron_e1505
GraphicsATI Mobility Radeon X1300 ( maybe ) just what I see on the above spec ...
The support for 12.10 runs out in April 2014
Also I have a feeling that 12.04 might just pick up the Graphics better too ...... as 12.04 LTS support also lasts to April 2017
( that means with 12.04 that the repositories and updates will be available through another 3 years )
where with 12.10 you have but a few more days.
Check the link below to see the support and end of life for each version of Ubuntu .......
https://wiki.ubuntu.com/Releases
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