wxWindows for GTK installation

[Tim <helycos@lycos.co.uk>]

Hi,

I'm installing wxWindows 2.4 over top of 2.2, using the .tar.bz2 file I
downloaded (use this rather than apt-get as I often reinstall and use a
dialup hence need to save downloaded updates).

Following install instructions, I've run ./configure --with-gtk, make,
make install, ldconfig.  The next instruction is to modify
LD_LIBRARY_PATH environmental variable.

As I'm no guru at this, I've not clue where to start.  Could someone
please show me the way?  I'm using Debian stable/2.4.18 kernel.

In what file is LD_LIBRARY_PATH located?  Am I off the track?

TIA,

Tim