Mounting Files Failed

[lavivis]

Hi I have an Imac G3 with mac.OS.x.2.8 with 576 MB in ram i tried to install software .dmg but an error 95 occurred (no mounting files systems) i don't know what i need to install software so please help me.Thanks

 

[russi4nroulette]

try ejecting discs in your cd/dvd-rom