Having some trouble. When I try to import a GEOM file it tells me it can not locate the bones. I am using a clothing file I exported from TSR and then extracted the package into a folder. There are 3 GEOM files and also 3 Bone files.

How do I get Milkshape 3D to find the Bone files?

I'm using,

Windows 7 64bit.
Milkshape 3D v1.8.5 (Registered to me) with all the plugins for Sims3 installed.

Thanks Tim

Moving to CAS where you might get more help from CAS users. I have no idea about GEOM files.

You can simply click the OK button and your mesh will load with a default skeleton that is included in the GEOM importer.
With sims 2 the skeleton was part of the meshfile and needed to be included, sims 3 meshes only contain a link to it.(Last TGI reference in the comments)

Edit,
This should work with exported GEOMs from a package, not sure if GEOMs exported straight from Workshop will keep its bonesettings tho.
The last time i used workshop you only had the option to export the meshes as a obj file, wich doesn't support bones...
Open your package with Postal or S3PE and export the meshes from there if thats the case.

The current version of Workshop doesn't export .simgeom files and no longer even exports .obj files, it now only exports in its own format, .wso (you have to add a plugin to Milkshape to enable this) - it's an unnecessary annoyance and is one of the many reasons I don't use Workshop (that, and the weird unpredictable results I get with it) and use CTU instead.

@Zippy: When you first import a .simgeom into Milkshape, it will always come up with a message saying 'Unable to locate bone file. Default skeleton used.' Just ignore it and click OK, as base1980 says. You should find the bones have retained their joint assignments, if you check it using the 'Sims 2 Unimesh Bone Tool' item in the Vertex menu. (Although the plugin's name says 'Sims 2', it works with Sims 3 body meshes too.)

Thanks everyone.

I didn't export the GEOM file from TSR. I created a Sims2pack file and extracted the package file from that, Then extracted the GEOM file from the finished package file using s3pe.

Thanks EsmeraldaF, I'll try that.