OK, answering a couple of things here...
'rename file before sending'
Shouldn't have to do this plus it puts the burden on someone else who doesn't even have the problem.
'the fix' (registry hack); I did this and it worked
http://www.integratingtechnology.co.uk/index.asp?id=206&parentid=201TrendMicro AV 2007 and Spybot
the 'original' problem. If you run Spybot, you may end up with incredible 'slowness' after updating to latest 2007 TrendMicro. Turns out that there is a conflict between TrendMicro and Spybot's 'Immunize' function. So either undo the Spybot 'immunize' function, or reload TrendMicro 2006 (you can use your 2007 Serial Number/key for this).
and now, the latest 'issue'
My video card is overheating!