dat files

I tried to send an email with 3 PDF file attachments (about 18 KB each). This gave an error but with no details or error code. There was nothing in the Outbox or Sent Items. After about 5 minutes the mail actually was sent but still didn't show in Sent Items. It showed with "(1/2)" in the...

I want to change the default icon in Windows Explorer for all files with the extension *.dat. How can I do this? Related question: Is it required to have a new icon with a certain size at hand? Assume I have an icon file "newicon.ico" with a dimension 256x256 available and assign this...

I have Windows 7, Office 10 both Home Premium and use Incredimail for emails on both my laptop and my PC. Why when my accountant sends me a snip image it arrives in my inbox perfectly on my Laptop and in my PC it is just an embedded formula (url) not a snip image. Similarly some pdf files...

I'm new to win 7 and so far I am liking it. I hope someone can help me out or point me in the right direction. This is what I would like win 7 to do for me: I created a desktop icon that can open a program (good so far). This program uses .dat files that can be loaded and ran from this program...

Before upgrading to windows 7 I backed up all of my data onto an external HDD by (in XP) going Start,all programmes, Accessories, System tools, Files and Settings transfer wizard. It made a load of .DAT files in folder called USM2T.UNC. Can anyone now tell me how I'm supposed to restore these...