How to make your own WSP

When I asked myself this question I thought in the VS2005 extensions for SharePoint. I discovered then that it was only supported for an environment with stand alone installation. I could deploy a solution only the first time (it only gives me an error about a feature not installed). The successive times I get an "Object reference not set to an instance of an object" and VS2005 didn't create the WSP file. Then I find the post about the Timer Job in WSS and a link to the method to deploy the solution without de extensions for VS2005. It seems complex, but it isn't.

Note: I had to activate the feature from the command line (stsadm).

Related links:
http://www.andrewconnell.com/blog/articles/UsingVisualStudioAndMsBuildToCreateWssSolutions.aspx
http://www.andrewconnell.com/blog/articles/CreatingCustomSharePointTimerJobs.aspx (An example of WSP)