Help! Transparency Problem!

[Zemy101]

Hey everyone, im pretty new to customising themes and stuff, but im having a go at creating a theme of my own.

Now ive read some tutorials on how to get started and up until now everything has been going smoothly.

My first ever theme is codenamed Zemy for the time being, and is far from complete. Please bear this in mind when looking at the screenshots ;)

As you can see below, i successfully made the task bar. I have no issues with transparency here:

Screen1:

Another example of transparency of my taskbar:

Screen2:

Now, the problems started to occur after i designed the tabs for the TB. All these files are 32bit PNG files btw.

Here's what a normal tab is supposed to look like:

Screen3:

But here is what the tabs look like when i apply the theme:

Screen4:

I can usually figure these problems out for myself, i used that AlphaConverter program and the problem persisted. The images i am using show up as transparent in Photoshop, but the glitch only happens when i apply the theme.

The same problem occurs with my start button:

Screen5:

Any suggestions would be really appreciated, plus you may just get a great theme out of this! :D

TIA,

Semy

[Zemy101]

Anyone at all? :(