How to load games onto hddloader?

Besides ripping a game dvd, is there any other way to load an iso to the ps2?
Is there a program that has similar functions like quix for the xbox?
Or perhaps i can use an ftp program like flashfxp?

Sorry but i do not know anything about hdd loader

Or can i hookup the hardrive and just transfer the iso?

use winhiip 1.7 to transfer the iso

put the hdd in your pc, and start winhiip, select your hdd and transfer the isos, batch mode works too!

Well, I might as well write here.
I'm having trouble transferring games from pc to hdd. My bro had my ps2 installed with, i dont know, Modbo perhaps.
Since then, I cant use winhipp or hdl dumb to transfer the games.
What should I do? can anyone help me please?
thanks.