Alright guys, I am new, but you seem to have all teh awnsers and I could use your knowledge. I read the thread fully, so please bare with me if I ask a question already asked, I am just trying to organzie all my questions.
1. What HD's work in the PS2
Read the faq at hdloader.com, or just read this thread. Maxtor/Seagate drives work best. The network adapter is IDE, so only the first 136GB of whatever drive you use will be usable. Western Digital tends to put the connectors for their drives in a little different position, so they don't line up with the connectors on the network adapter.
2. I heard you had to install a fiel or something on to the HD before the PS2 would acknowledge it, is this true?
With HDloader, you only need to format the drive, which hdloader will prompt you to do the first time you boot it.
3. Can someone please test the HDloader program with Red dead revolver and or Megaman anniversy collevtion?
Sure, send me the games, and I'll load them and tell you if they work.

4. Has anyone...this is going to sound stupid since the program is not made for it, but has anyone tried to copy a movie or dvd to the hardrive with the loader?
Won't work. The PS2 has already selected Playstation2 compatibiltiy mode when it boots the hdloader disc. That's also why PS1 games won't work. Now, some genius out there might be able to work out a HDloader-type program for the PS2 that will do DVDs or PS1 games, but the current version doesn't work that way.
5. Does the HDloader work perfectly with the offical drive?
Define "work perfectly". You still can't load games that don't work with HD loader, regardless. You can still use the Official HD to transfer memory card saves, download FFXI content, etc. even if HDloader has games saved on the drive (space permitting)
6. am I getting annoying from all these questions?
Do you really want me to answer that?