How to get access to structural members?

Hello,

Me, absolute SW newbee, can't seem to load any weldment standards from SolidWorks 2010. The system I'm working on I located some files here:

C > Program Files > SolidWorks Corp > SolidWorks > data > weldment profiles > iso >

angle iron (folder)

c channel (folder)

pipe (folder)

rectangular tube (folder)

sb beam (folder)

square tube (folder) >

                                   (this folder contains) >

                                   20 x 20 x 2.sldlfp (142kb, date 2009)

                                   30 x 30 x 2.6.sldlfp (144kb, date 2009)

                                   40 x 40 x 4.sldlfp (144kb, date 2009)

                                   80 x 80 x 5.sldlfp (133kb, date 2009

The problem is none of this will show in the pulldown menu. I downloaded iso standards and ANSI inch standards, from within the program (through SolidWorks Content). This gets me many more files. The new square tubing folder for example runs up to 400 x 400 x 10mm tubes. However the new file sizes are smaller and older (90 kb, date 2006). And file extensions are named in capitals (eg. 20 x 20 x 2.0.SLDLFP). In weldments submenu everything is greyed out exept for Extruded Boss/Base and Reference Geometry.

This doesn't seem right.

a) How do I make the submenu ungreyed?

b) How do I make these 4 sizes available in the submenu?

c) Can I overwrite for example these 4 original files with the many more files I just downloaded in the location I mentioned above?

Thanks for any pointers!

Maurits

SolidworksWeldments