Your problem may initially lie with NOT installing Outlook EXPRESS with the Browser install,, the OUTLOOK shares some of the files from Outlook EXPRESS,, no express equals errors
CAUSE
Outlook 2000 requires certain files shared with Outlook Express in order to function properly.
This situation can be caused by installing Microsoft Internet Explorer 4.x or 5.x with a Browser Only or Custom installation that does not install Outlook Express. If Microsoft Outlook 2000 is then installed, and you choose not to update the browser, the Outlook Express support files required by Outlook are not installed.
RESOLUTION
Follow the instructions on the first error message and install Outlook Express.
How to Reinstall Outlook Express on Microsoft Windows 95
Click Start, point to Settings, and then click Control Panel.
Double-click the Add/Remove Programs icon.
Click Microsoft Internet Explorer 4.0, and then click Add/Remove.
Click Add a component to Internet Explorer, and then click OK. Click Yes.
Under Communication Components, click Outlook Express, click Next, and then click Install Now.
OR
CAUSE
Outlook 2000 requires certain files shared with Outlook Express in order to function properly.
This situation can be caused by installing Microsoft Internet Explorer 4.x or 5.x with a Browser Only or Custom installation that does not install Outlook Express. If Microsoft Outlook 2000 is then installed, and you choose not to update the browser, the Outlook Express support files required by Outlook are not installed.
RESOLUTION
Follow the instructions on the first error message and install Outlook Express.
How to Reinstall Outlook Express on Microsoft Windows 95
Click Start, point to Settings, and then click Control Panel.
Double-click the Add/Remove Programs icon.
Click Microsoft Internet Explorer 4.0, and then click Add/Remove.
Click Add a component to Internet Explorer, and then click OK. Click Yes.
Under Communication Components, click Outlook Express, click Next, and then click Install Now.
How to Reinstall Outlook Express 5 Using Windows 95, the Original Release of Microsoft Windows 98 or Windows NT 4.0
Click Start, point to Settings, and then click Control Panel.
Double-click the Add/Remove Programs icon.
Click Microsoft Internet Explorer 5 and Internet Tools, and then click the Add/Remove button.
Click to select the Outlook Express check box even if it is bold.
How to Reinstall Outlook Express 5 Using Microsoft Windows 98 Second Edition
Click Start, point to Settings, and then click Control Panel.
Double-click the Add/Remove Programs icon.
Click the Windows Setup tab.
Click to clear then Outlook Express check box, and then restart your computer.
Follow steps 1 through 3 again, and then click to select the Outlook Express check box.
STATUS
This behavior is by design. The Internet Mail Only installation requires the installation of Microsoft Outlook Express. For additional information, click the article number below to view the article in the Microsoft Knowledge Base:
230076 OL2000: Why Outlook 2000 Requires Outlook Express