my finances + excel

I wonder if anyone is "managing" his finances in excel? I really want to get an overview every few months on how much I spent in certain categories (car,motorbike,house,clothes,...............) and how much of it could actually be "safed".

I checked out quite a few of those financing apps:
Quicken
Starmoney
MS Money
...

but they all have some problems with my bank or are just pain in the ass to work with.
So I thought about creating an excel sheet where I import my .csv files from my banking account and then add each transaction to some category (e.g. car, or salary or what ever) and then create some diagrams/statistics.

Any previews or ideas or smth I could use to start with?

Thanks

@edit: my biggest problem right now is how to "import" the new .csv files without losing the old one + it's changes.