Where does IE store form data to resubmit when I refresh the page?

Hi everyone, I'm new here and this is my very first question so be gentle. I've had a great time reading through many of the questions returned by my searches, and the many proposed answers, and final solutions. However most were related to webpage design and provided far more information than my simple webpage user question requires. I'll explain the scenario that has played out a number of times in the last week or so and has led to my question.

 I was trying to submit support forms to both Acer (acer.custhelp.com) and Handmark (handmark.custhelp.com). Both use the same popular format that I've used many times before on other company's support sites as well. After I entered the required information (ie. model #, serial #, OS, etc.) I then filled in the most important field of all: the narrative describing the details of my problem. I tend to spend a lot of time on this part and try to be as detailed as possible hoping to get the best response in the shortest time. The problem is that these and other sites will time out before I submit them. So when I finally do I get a message informing me that I've timed out and suggesting that I use the back button and refresh the page to continue.  Which would be fine except they don't mean continue. What they mean is start over because the form that I just spent a lot of time working on is now blank. After the sick feeling in my gut fades a little I try hitting the forward button and IE pops a window saying "To display the webpage again, IE needs to resend the information you previously submitted." Which is basically what I wanted to do, so I click the "Retry" button it provides to do this. And anyone who's had this happen to them knows, it redisplays the page informing me that my session has timed out. I can repeat this loop of steps over and over and each time IE tells me that it can resubmit my information by clicking "Retry". That's what makes me certain that my carefully crafted and lengthy narrative is temporarily being stored on my PC somewhere. So my simple question is "Where?" I've searched for it everywhere including the deleted file space. I did find a few .dat files that appeared promising in the C:\users\mypc\appdata\local\microsoft\internet explorer\recovery\high\active folder, including the file: RecoveryStore.{BCCE04F1-6284-11DE-B07E-000272C4B1B7}.dat. However I couldn't view them because they were in use by another program, IE I'm sure. I would be immensley grateful to anyone who's got the answser to my question. Oh, I almost forgot to mention I'm using Vista Home & IE 8.