Simple sidebar system

Hi, I am willing to start a blogging activity but i can’t quite find the system that fits to what i wan’t.

I actually found what I wanted on blogger’s “dynamic view”
( http://testdevrsepierre.blogspot.fr/ )

What is important :

# the simple sidebar with all my posts (i can’t find any wordpress template with this system

# The quick search : When i enter something in the search field (you can test with “lorem” keyword or “test”. It will automaticly display the posts with the correct keywords in the sidebar. Which is very pleasant.

Why am I willing to use wordpress if blogger is perfect ?

Well it’s not perfect, far from it.

# Non-customisable : Dynamics view (this template feature on blogger) won’t change however you add code or anything, you can only edit CSS successfully. Can’t add any plugins or anything (we can on regular blogger template, but regular templates won’t have the two mainfeatures i’m looking for)

# I can’t control my blog (only access to CMS, no file upload etc.)

What i’m looking for :

I am looking for any widget or sidebar template that will allow me to have the two important features quoted (most important feature : the sidebar. Qz.com is a good wordpress example except it doesn’t have instant search. But i would be ok with this kind of template hehehe)

I’m seeking for any leads any tips, anything !