You might consider posting what hardware you have. That way someone with more technical know how might be able to help you.
I agree, in particular it would be good to know how your hardware stacks up against the following PCLOS 2010 specified minimums -
Processor - Any Intel, AMD or VIA processor.
Memory & storage - RAM : 512 MB minimum, 1 GB recommended.
Hard disk - 3 GB minimum, 8-10 GB recommended for a full setup.
Video card - nVidia, ATI, Intel, SiS, Matrox, VIA.
3D desktop support requires a 3D instructions set compatible card.
Sound card - Any Sound Blaster, AC97 or HDA compatible card.
Creative Labs X-Fi cards are not currently supported.
Other - CD drive required.
SATA, IDE, SCSI, SAS - most controllers are supported in non-RAID mode.