Drink a bottle of whisky, you'll still have a cold but you won't give a toss! 
Haha the best advice I've heard in ages
Seriously though, avoid hot toddies etc etc... I wouldn't drink any alcohol as it impairs your immune system.
Sherco has the right idea.
Echinacea is the dog's doo-daa's!!!Now, with most of us here being "blokey" blokes I'd think 90% of guys reading this will think "pah! herbal medicine what a load of ****"
Well you're wrong!
I have always been the type not to go to the doctor or hospital until I have to be taken in an ambulance... but believe me echinacea works!!
It's quite simply a plant which is crushed and made into a liquid (don't take the tablets or other forms, they are pants). The way it works is simply by boosting your body's immune system.
It does NOT make the illness magically go away, but what it does do is make the difference between feeing like you want to die and being able to get up in the morning and go out to earn your money. It's a really weirdfeeling - you know you've got a cold but you just feel normal apart from having to blow your nose or having a cough & phlegm etc.
I haven't had a day off due to illness in the last 5 years since I've been using it. But you have to remember to get more rest than usual for your body to recover.
Anyone who doesn't enjoy being ill should get some, take one dose several times a week throughout the winter even when you're feeling OK, and when you start to feel like you might be coming down with something, take 3 doses a day until about 5 days after you feel better.
I'll say again, I used to pooh-pooh herbal medicine but echinacea works! Give it a crack
This is the stuff you need:
www.healthmantra.co.uk/index.php?main_page=product_info&products_id=3706&zenid=b785a3f1ec61ed2b8e4d1507a391c533