You can call a locksmith to unlock your Honda CRV 2007 if you have lost your keys. Locksmiths have special tools that allow them safely unlock your car without causing damage. You can not use tape to unlock your Honda CRV 2007.
changing fuel lines usually requires special tools, these can be borrowed probably at autozone.
Take it to a garage as you need special tools and the alignment has to be set when you replace them.
with hand and tools...
Metric
Take it to an a/c man. He has the knowledge and tools to do it.
You should go to your Honda dealer. Calibration tools can be expensive, usually a mechanic is cheaper.
Only a Screw driver and a flat head to help to install it.
Depends on the vehicle... Here is a link to complete head gasket job performed on a Honda Civic http://honda-tech.com/zerothread?id=1404941
10 or 11mm socket rench and a C-clamp
Buddy, you need a shop manual on your car and good tools for this job. The manual will explain everything in details with pictures too.
1 day. The fun part will be getting the cover to seal & removing installing the balancer. you need the right tools for that.