i have just changed my host, and my new DNS is up to date now. i have saw 5 googlebot visit but everyday i recieve approximately 40 Googlebot visits. i havent deleted my pages from old server.

There is no fresh tag on the SERPs but competitors have.

So what should i do? 24 hours have past, should i wait 48 hours more to delete pages from old server? And what should i do more?

IF your DNS has propogated there is no reason to have the old files on the old server, delete them and dont worry about Gbot he will find you, sounds like he already has

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Thank Seo-Guy, today my Googlebut activity is okey, 46 visits...

BTW, these Win2k3 Servers rocks man, who cares poor Unix servers any more? Php is sitting like a beauty lady on Win2k3 server...