Hi,
Yes, you can set your letterhead to be the default stationary fo Outlook by following these steps.
1. Open Outlook
2. On the Tools menu, click Options, and then click the Mail Format tab.
3. Click Stationery Picker, and then click New.
4. In the Enter a name for your new stationery box, enter a name.
5. Under "Choose how to create your stationery," select whether to start from scratch or use an existing stationery.
To select a file to base your stationery on, click the "Use this file as a template" box, type the path and file name or click Browse to select the file.
5. Click Next.
6. Select the options you want to use.
For more in depth information, please refer to the following Knowledge Base article.
182401 Working with HTML stationery in Outlook
http://support.microsoft.com/default.aspx?scid=kb;EN-US;182401
Regards,
Scott Atkins MCSE, MCSA
Partner Technical Lead - Outlook
Microsoft Technical Support
for Platforms and Business Applications
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