PALM CENTRO ...... A COUPLE QUESTIONS?

[Ripper]

OK on my palm centro i have no apps or anything for i lost my computer cord and disk and all i got is a 4gb memory card and a computer hookup for that..... So i downloaded a couple palm things on my memory card.... there like zip files and wen i go to download them on the palm blazer it says this file is not supported so i went on puter and extracted them and still no go so yea i would like to know how to get games and stuff on there with just memory card..... and also i had some ringtones i put on there off of my memory card and i downloaded em through the blazer ( i have no active internet on my phone) and they all work they work on ptunes to.... i wanted them to b shorter so i used a song splitter and it cut them down then when i go to download them into my ringtones it goes on but it does not play it is not supported but i can play them on ptunes so idk... anyone help please