Smokey,

You asked, "Do YECs take all the Old Testament at face value or selected parts, and if the latter, which parts, which version of the Bible, and who decides/decided?"

Some YECs take all of the Old Testament at face value; some do not.*
   
As for which version of the Old Testament, well, there's really no issue. Every version presents the same account, so there is no need for anyone to "decide" between them. Here are some samples of Genesis 1:1:

In the bigynnyng God made of nouyt heuene and erthe. (Wyclif, 1395)
In the beginning God created heaven, and earth. (Douay-Rheims, 1609)
In the beginning, God created the heavens and the earth. (ESV 2001)

Kent

* If you were are asking whether we believe that all of the laws of the Torah still apply, the answer is "no". Some believe that the laws of the Torah are still in effect, but that parts of the Torah (for example, laws relating to the tabernacle, to the Ark of the covenant, or to the inheritance of tribal lands) no longer apply since the situations with which those laws deal no longer exist. Others go further, saying that the laws of the Torah have been superceded by the New Testament. Muslim Creationists, of course, accept the Koran, not the Torah, but there is a great deal of agreement between the two.