As Ben has already pointed out, simple questions like these have been asked and addressed many times in the 7 year history of this forum; you just have to look.
Here are some sneezing-related threads which I was able to find after 2 minutes of searching through the archives on this website via the "search" option..
http://forums.kingsnake.com/view.php?id=668241,668241&key=2004
http://forums.kingsnake.com/viewarch.php?id=64547,65264&key=2003
http://forums.kingsnake.com/viewarch.php?id=561350,561350&key=2004
http://forums.kingsnake.com/viewarch.php?id=588476,588540&key=2004
The information is there, you just have to put some effort into finding it- as opposed to relying on other people to always help you-regardless of whether or not it is a common, recurring question that people are sick and tired of answering for the fiftieth time.
Don't get into having the selfish attitude where if your animal dies, you go and blame the forum participants for its death because of their failure to respond to your questions.. It is your animal, and your responsibility for finding answers to the questions and problems that face you. Relying 100% on other people to tell you what to do or how to think is not the way to learn, nor keep reptiles.. Apply yourself, as Ben has pointed out in the last three or so responses..
I would also look into the books that Ben has suggested, as they are among the best literature around concerning Varanid biology. Looking to Reptiles Magazine and online Reptile Keeping Forums will not get you far in understanding anything about your animal/s.
Good luck, and once again, apply yourself.. As for this website.. I take it you know how to use google; using the search option on this website is no different..
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