playBunny:I'm sorry it took so long to reply.  Thanks for the reply.  I checked the pics and the one that suited better was the first one: pram.  It looks more like what we have here, despite the fact that they have the 'collapsing' capability.

As for the other question, although I'm sure your answer must be thorough enough, I didn't get my answer!   My lack of knowledge it should be.

Let me ask my question in another way:

Which one of these explanations goes with which sentence?

1) I have an inner passion for swimming however I may not want to swim right now.  Or in other words, swimming is one of the things that I generally like and I do it when I feel like it, maybe now, maybe some other time.

2) Swimming is one of the things that I like and right now, I want to do it.  In other words, not only do I like it, but I want to do it right now.

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Or maybe I can give you what I personally think and you can correct me:

I think when I say " I like swimming " I am referring to a general fact.  Swimming is a sport and it's fun and I like it.  Just like when I say I like hamburgers.  I may not be eating hamburgers in that particular time, but as a fact, I like them.

When I say " I like to swim " maybe I'm trying to say that I want to do it right now.  But I'm not sure.  So what I want to know is the difference between this sentence and the one above.

And, when I say " I'd like to swim " well, I used to think there was some sort of asking for permission in it.  But your example gives me the impression that it's conveying strong will.  So when I say " I'd like to swim ", I'm trying to say that I really really want to do it and do it now.

Thanks for helping me get the differences.