Why will solver only return the original adjustable cell values?

[Del]

Dear Sir or Madam,

I'm attempting to use the solver tool, but the "target" and "adjustable"
cell values that it returns in the answer are always the same as the original
and incorrect. Can this method work if there is more than one formula at
work (ie. if the target cell value results from a formula that contains a
value resulting from another formula, etc)?

Thanks very much!

Del