using CONVERT VARCHAR with DISTINCT in Select

[GregM56]

I can
SELECT CONVERT(VARCHAR (8), DXACCNUM)
but I cannot
SELECT CONVERT(VARCHAR (8),DISTINCT(DX ACCNUM))

I am merely trying to make that int column 8 char wide.

Any ideas from anyone?
Thanks!

[Rabbit]

select distinct convert(varchar (8),dxaccnum)

[GregM56]

Thank you so much Rabbit!