IF you have the metal "mini-blinds" they are not too difficult to remove. The headrail is held in place on each end with a plastic or metal bracket. on one of those brackets there is a piece that "slides out". Once this piece is slid out, you slide the headrail out of the bracket and then it will pull out of the other bracket.
Here is a link to a photo of the bracket, you will need to scroll down until you come to the "plastic" one, and you can see how one side of it slides out. I think yours should be plastic. If they are metal, just don't scroll down as far and you will see the metal ones.
Brackets for 1" Mini Blinds
If you need anymore help, all you have to do is ask.
Kitty