Assuming that these machines are networked and File and Printer Sharing is
working:
On the Dell open Outlook; click File and select Import and Export. Select
import from another file or program - NEXT. Select Personal Folder File
(.pst) - NEXT. Browse to the pst file on the HP - C:\Documents and
Settings\<username>\Local Settings\Application Data\Microsoft\Outlook.
You could also just copy the pst file and open it in Outlook.
Doug Sherman
MCSE, MCSA, MCP+I, MVP