create a button to reference values from source page

[strelec]

I need help with a worksheet. I have 0 experience with VB, but i feel this should be rather simple.
Sheet1 is my Source sheet. Source sheet has a start date, and a list of students with values. Each student has name, 3 values and calculate button associated with him.
Sheet2 and Sheet3 are my data sheets, they have date, name of the student and 3 formulas - one for each source value. Formula is always SourceValue * X where X is the value of Date formula cell.
When I click "calculate" button the desire is to
1) set date on Data1 = source date + 7
2) set name of Data1 = source name
3) replace value of Date1 C5 cell = Source Value1 * by the content of C5 cell. for example if Source.Value1 is 100 and Date1.C5 = 0.5, I want Date1.C5 cell value to be replaced with 100*0.5 = 50
I can record macro for 1) and 2) and it works, but I can't figure 3) part. Looks like I can't attach files here , so here is dropbox link https://www.dropbox.com/s/jd4erxps4q5efn0/Date_transfer.xlsx?dl=0 and if this doesn't work either below is copy paste from the file.


Source sheet:

---

Start Date:	9/14/2014
Student Name	Value1	Value2	Value3
John Smith	100	100	100	CALCULATE <tbody> </tbody>
Rick Johnson	150	150	150	CALCULATE <tbody> </tbody>
Katie Evans	165	210	190	CALCULATE <tbody> </tbody>

<tbody>
</tbody>

Data sheet:

---

Start Date = SourceDate + 14 days	9/28/2014
Student Name = SourceName of the student	John Smith
Formula1 = Multiply SourceValue1 by:	0.5
Formula2 = Multiply SourceValue2 by:	0.6
Formula3 = Multiply SourceValue3 by:	0.7

<tbody>
</tbody>

any help is much appreciated!
thanks