[HelpDesk] Helpdesk question via web

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Form data:
  Name: Earlyn Tomassini
  EMail: ektomassini at gmail.com
  OS: vista 32bit
  UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.0.04506; Tablet PC 2.0)
  IP: 24.17.110.169
  Time: Fri Dec 28 15:13:49 2007

Hi,

I have a new computer with Vista on it (32bit) and want to download LDraw.  I clicked on the download and it pops up a box with letters for me to type, but there is no text box visible.  I type the letters and click on "submit" and then it pops up another series of letters for me to type.  I did this numerous times and it never moves onto the next step in the download.  Letter case sensitivity doesn't seem to be an issue since it does that same thing whether I have the shift down or not.  Do you know what might be the issue?
Thanks!