[offer]\[trade] 5 books for Engineering Students: AutoCAD, MathCAD, Solidworks, Mathlab, etc.

I have 5 textbooks from fall of 2008 that were supposed to be ones I would need throughout the engineering major. I changed majors the semester after buying them and they have only been taking up space since. I know they change editions constantly (these are also UCF editions of most of them), but these are still fairly recent and should be relevant enough for class, or maybe you just want to learn them on your own. If you want them, make me a trade offer for something cool/interesting you have but may not need anymore (money is also never a bad offer, as I am broke). The titles are:

A Tutorial Guide to AutoCAD 2008 - S. Lockhart

Learning Solidworks - R. Lueptow, M. Minbiole

Engineering with Excel - J. R. Larsen

Introduction to MATLAB 7 - D. Etter, D. Kuncicky, w/ H. Moore

Introduction to MathCAD 13 - R. Larsen