Hooberus, if one states "complex designs require an intelligent designer" and then cannot show how the designer came about, you are making a self-refuting hypothesis.
I think that a lot of your problem is that you misunderstand the creationist/ID "design argument".
The design argument is not that any type of complexity or intelligence in existence would also "require" a designer for its existence. Such an argument would even exclude the possibilty of an eternal intelligent being.
Rather instead the design argument is that the design (design as in mechanical complexity) found in certain objects (such as watches, photoreceptors, etc) that have an origin is best explained as being the result of an intelligent designer and/ or is evidence of intelligent design, requires a designer, etc.
There is no requirement that in order to assert that mechanically complex objects that have an origin (e.g. photoreceptor) would have required a designer, that a person must also "show how the designer came about" in order not to be "self-refuting". For example if a complex alien structure (such as a spacecraft, masonry building, etc.) were found, such a complex object would surely by many scientists be said to have required a designer, yet this would not be a "self-refuting hypothesis". This is true even if they were not able to also show "how the designer came about." Furthermore, there is no requirement in arguments for design for the designer to have even "come about" at all - perhaps he has always been.
If you add "... but the intelligent designer doesn't need a designer" you are, by definiton, using special pleading.
It would only be "special pleading" if creationists/ ID proponets taught that the designer has 1). a mechanical type of complexity and 2). an origin, and then also taught that he "required no designer".
Since neither creationists nor ID proponets teach this there is no "special pleading". (ID proponets don't usually specify the charcteristics of the designer, and creationists for centuries have generally taught that God has no origin and is not composed of mechanical parts.) see also my previous points on this issue on this thread here:
http://www.jehovahs-witness.com/12/102388/1768157/post.ashx#1768157
If you additonally claim "... because it has always been there", you additonally add a postulation that cannot be proved.
My "postulation" was simply that it is logically valid to make statements such as: "something without an origin needs no designer" and "something that has always been there doesn't require a designer"