Help needed to remove front panel of a Samsung TFT monitor

During the summer, a couple of small (but determined!) insects have
found their way into my Samsung SyncMaster 213T monitor and are now
entombed beneath the front plastic screen in full view. To say this is
annoying is something of an understatement, however, Samsung claim
their removal is not covered under the warranty.

Without specifically telling me I should do it (because it could
invalidate the warranty), the guy I spoke to suggested I take off the
plastic screen myself and remove the insects. Trouble is, it's not
immedaitely obvious how to do this as there aren't any screws - just a
small oblong hole under the bottom edge and another on the back panel
with a small 'lock' icon.

Could anyone tell me how I can get the front cover off without damaging
anything?

Thanks in advance...

Nige