Have you been to the perfect coffee house in San Francisco, are you an authority on Cape Town youth hostels or can you recommend the best book to read while you're travelling round New Zealand? Help Andrew and Ellie on their journeys and you could be following in their footsteps.

Post your advice - on what to eat, where to stay, what not to miss and what to avoid at all costs - on our talkboards, and the best tip (judged by the Netjetters) will win a pair of flights to Thailand, Singapore, the US or Canada, courtesy of Microsoft.

Post a tip for Andrew.

Post a tip for Ellie.

Terms and conditions

1. Entrants must be UK residents and at least one potential traveller should be over 18 years of age.

2. Only one entry per household is allowed.

3. No purchase is necessary and there is no cash equivalent or substitute available.

4. There is one main prize of a pair of return flights to the following destinations: Bangkok, Singapore, Mexico, New York, Boston, LA, San Francisco, Miami, Washington, Chicago, Las Vegas, Seattle, Vancouver, Toronto or Montreal.

5. The flights can be taken at any time between winner notification and October 30 2002, subject to availability.

6. The closing date is for this competition is midnight Friday March 15 2002.

7. Winners will be drawn at random from all complete entries and will be notified by email by Tuesday April 30 2001.

8. The surnames and county of residence of the winners will be available on written request by sending an SAE to Netjetter promotion, Guardian Unlimited, 3-7 Ray, London EC1R 3DJ.

9. This competition is not open to employees of Guardian Newspapers Ltd, Travelbag, Microsoft or their agencies.