Problems with saving a .xls-workbook created by using wscript.shell

Hey. I'm trying to save csv-file like .xls, when I have used wscript.shell to format it into a excel-sheet. But I am having problems. The code generates an excel-sheet, but I can't do any formatting or saving (from the script itself I mean. I can format it using excel). I'm trying to make a script that automizes the formatting (like autofit etc.). My plan is to first save the file as an -xls file, then do the formatting with another script. Here is the code I got so far (this does not attempt to do any autofitting or saving).

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sValue = shell.RegRead("HKCR\Applications\EXCEL.EXE\shell\edit\command\")
strFn = Args.item(0)

sCmd = sValue & " " & strFn
shell.Run sCmd

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Any idea of how I can save this, or do some more formatting without saving it?

you have the Excel.Application component, which as far as I know provide the interface for working with Excel sheets for any programming language, including VB.

That's the way I do it when I need to do formatting.