lynx - I bought my Arctic Silver for 10 quid from
www.overclockers.co.uk Check it out, they are now selling Arctic Silver II for a fiver (+delivery).
To remove that cooler tape slime from the bottom of your cooler, use some highly refined white spirit or alcohol and make sure its all clean and shiny, and free of dust, hairs etc.
You probably already know this, but don't touch any contact surfaces (CPU die or the part of the HSF which is going to be touching the CPU) with your hands - skin cells and grease don't conduct heat particularly well.

Hope this helps.
BTW, be extremely careful with application of the Arctic Silver - like Sky Viper says it is can cause shorts. Just apply a thin layer to the die and for god's sake don't let any spill over off of the die.

You don't need alot, just a thin even layer.
I left my case rest on its side for a couple of days after the silver was applied, just to make sure it had all seated itself properly.
[This message has been edited by Dowding (edited 03-14-2001).]