DLookup Problem

[Billy]

Access can not run Dlookup Function in a new Computer
how can i solve it .

[ranman256]

this makes no sense,
pick any table you have , copy any key you see in the table:
ID, Name
3, Smith

then press Ctl-G (immediate window)
type:
?Dlookup("[Name]","tableName","[id]=3")

it should give you 'Smith'. (dont forget the question mark in front)

[Minty]

More information required.
Please show us what have you tried, and what is the error message if any?