Remove SpamSieve from dock?

[superjoppe]

Im a switcher so sorry if this question is stupid.
I installed SpamSieve and it works perfect to remove all spam.
However, I prefer a tiny dock with few icons, and I dont think SpamSieve deserves a place there (never clicked on it).
Is it possible to remove it from dock but have it running (as for example Quicksilver can do), or is this a feature that the developer must include?

Thanks

edit: or have I missed a feature so i Should have it in dock?

 

[TBi]

Just drag and drop it off the dock and it should disappear. Unless it is running.

 

[grapes911]

Just drag and drop it off the dock and it should disappear. Unless it is running.

Is it possible to remove it from dock but have it running ...

I've never used the app, so I don't know if that particular program has that feature. I do know that there are a could of programs that remove apps from the Dock and let them still run. I've tried some (I can't think any of their names), but they all sucked. None of them constantly keep things hidden. Programs would disappear and reappear after restarts and sometimes just randomly. My advice is to just leave it alone.