I have the idea of doing an animated web comic ,that means: it shall have a usual comic template but instead of static pics there'll be animated clips about max 2 seconds .I think 15 frames/s are enough.The animation starts as soon the cursor is at the preview.So I am totally far away from any programming knowledge - is there a tool that I can use to bring my Idea to life ?

I have seen something like this where it uses flash but I am unsure of the software that was used to do it. You might want to search Google for something like this.

You could do this with fairly simple scripted Flash (SWF), carried on plain HTML.
Use Flash to build the animations, with a start-on-click command for
each short loop.  Then mount the loops on the webpage... use HTML
to set up the series of pages.  

Here's an example of 'start-on-click' from my blog:

http://polistrasmill.blogspot.com/2005/10/polistra-does-miers.html

are you talking about the Metal Gear Sold Portable Ops kind of comic?

Its called Adobe Aftereffects.

Sorry,I am not that deep into gameing to know what you mean.

You can check out Motion Artist 4

http://my.smithmicro.com/win/motionartist/index.html

download the demo and see if does what you what.

take care

You could even export the Flash animations straight out of Poser. You'd have to script the Flash player on your HTML pages, but that shouldn't be too difficult.

Look at www.w3schools.com for getting your HTML to work.