See solution 1 in the following document: http://helpx.adobe.com/creative-suite/kb/troubleshoot-download-assista nt.html#main_Solution_1
That should help. Let us know if you're able to download the trial.
PS: You already have an Adobe ID (using which you posted on this forum). So actually you have no need to create a new Adobe ID. You can use this one itself.
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