Hopefully these photos will give you an understanding of what you are up against, as it may not be so easy to see with the headlamp assembly in the car, in the dark, in the rain.......

Dipped Beam
This is the clip for the normal driving / dipped beam light - H7 Halogen Lamp
(not the main beam/flash).
These H7 Halogen - Extended Life + Brighter Osram lamps have an extended life, hence less often changes. If you are going to spend an hour, or more

H7 Halogen - Extended Life + Brighter

A different view of the same H7 (dipped beam, driving) lamp clips:
A closer view of the fiddly clips:
Main Beam
The H1 Halogen Main Beam/Flash, has different, but just as fiddly clips.
These shots show the clips, but with the H1 Halogen Main Beam bulb removed.
And a different view of the Main Beam clips:
Clicking the images will take you to a larger version of the pictures shown above.
The lamps you need for the dipped, driving, dim dip are H7 Halogen (Extended life + Brighter) OR Standard H7 12V 55w (Budget)
For the main beam, high beam, flash, you need H1 Main Beam Halogen (Extended life +Brighter) bulb.