Hi - it seems my car has decided to let in water from both drivers door and passengers. I've looked at the seals of the doors which look pretty perished, and have quite a few small hole in.

I've found some new seals, but I've no idea how or what I need to do the job. Would a non-mechanical person like myself be able to prise off the existing seal with a screwdriver, and push on the new one by hand?

Or am I looking at buying a special tool.. and someone that knows what they are doing??

Your advise would be most welcome!