Amazon
Local DIY store
Maplins / Radio Shack
The age of the machine has little significance - it will likely need just two-core cable but three-core will not hurt - check this first before buying cable.
If you buy a length of cable and any end connectors you need then you can have the power cord the exact length that suits you.
Your question suggests that electricity may be a bit of a mystery for you - so take care.
Peccavi, June 2013
