Hyperlinks in tasks and calendar events

[Resi]

Hi
I am tryin to help a colleague to reduce the size of her mailbox.
she uses the task or calendar event as a way to 'store' all the files
related to that task/event but this is adding up to her mailbox size.
is there a way to link/hyperlink the task/event to the original file location?

for example: January Monthly report template recieved. she can save it in
'my docs' and only link the task to the my docs file location?

I did succeed in doing it once and have also regulalry done it in message
bodies by the INSERT menu, but i am lost in the task/and events...

help much appreciated!
R