modules not showing in plugins

Hello,
I am new here, and just installed fresh versoin of latest release Gallery2. Everything so far is working perfectly. I get no errors of any kind. I am trying to integrate Gallery with Mambo. When I upload these module/modules

com_gallery2 -> The mambo component which integrates G2 in mambo
mod_g2_sidebar -> A mambo module to add the G2 sidebar separately
in G2
mtrans -> A ``transparent'' G2 matrix theme created by ShadowX
for embedded G2 in mambo.

The com_gallery2 module installs fine in Mambo, but the rest wont install. I don't know if I'm putting them in the folder wrong, or what I'm doing. I changed the permissions, I cleared the cache, several times, nothing I do seems to work. I really think I must be uploading the folders incorrectly or something like that. Not sure. Any thoughts on what I am doing wrong.

Let me know if you need more information than what I am including. Like I said I am new here, so I apologize in advance.

Thanks