Open specific workbook using file name provided via input box

I'm currently developing a system for a coach company where they'll be able to write out quotations and save/open them all at a click of a button.

I've done the Save button, but I can't get my head around the open. I've written the following code below;

Sub Open_Quotation()
    Dim sFile As String
    Dim MyFilename As String
    MyFilename = InputBox("Enter quotation number") & ".xls"
    sFile = "..\Desktop\NT System\Private Hire\Quotations" & MyFilename
    Workbook.Open Filename:=sFile
End Sub

I just can't get it to work.

Some help would be appreciated.

Re: Open File When File Name Given Through Input Box

Nope that don't work.

Yes, I'm doing it for a company that uses Excel 2003, so I'm doing the system in .xls format.

Re: Open File When File Name Given Through Input Box

Ah nice find mate.

That was the problem. Thanks for your help.

Re: Open specific workbook using file name provided via input box

UPDATE:

I have the below code to save the quotation, and it asks what to save the file as within a InputBox.

Is there a way of this being automatically generated so Q0001, Q0002 and so on ...