Howto convert geotiff elevation data to esri bil file format?

Use gdal tools, namely gdal_translate[1]. If your geotiff file has spatial specs encoded in it is really easy.

eg;
gdal_translate -of EHdr e020n40.Bathmetry.tif e020n40.bil

The gdal_translate command also creates the necessary bil header files.

[1] http://gdal.org/formats_list.html

Try to view the output with OpenEV.

Adding folders to "My Computer" in Windows XP

This free tool lets you add folders to My Computer...

http://eng.softq.org/Folder2mypc

Link Shell Extension

Hardlinks provide the ability to keep a single copy of a file yet have it appear in multiple folders (directories).

Now for NTFS it is possible to define new hard links, junctions etc. It is very useful if you use DropBox and sync different folders.

It is freeware, you can get it from the link below;

http://schinagl.priv.at/nt/hardlinkshellext/hardlinkshellext.html