Welcome to the 986 community, Jordi! We are happy to have you. I posted our ignition switch DIY below and also linked you to our extensive DIY tech article library. Be sure to bookmark it as it has a lot of really useful information when any issues arise on your 986. If you have any parts or forum questions please do not hesitate to reach out to me as I'd be more than happy to assist you.
Ignition switch:
Porsche Boxster Ignition Switch Replacement - 986 / 987 (1997-08) - Pelican Parts Technical Article
DIY tech library:
Porsche Boxster 986/987 (1997-2004) Technical Articles | Pelican Parts