I've recorded a macro, and need to make some adjustments but after a couple
hours trying to find it in the Microsoft VBA documentation, I've given up and
hope someone here can help me.

First question, here is a portion of the code as recorded:

Selection.End(xlToLeft).Select
Selection.End(xlDown).Select
Range("D1282").Select

The first two steps put the active cell on the last cell containing data in
column B. The next thing I did in recording was to press the right arrow
twice. The third line above indicates a specific cell is now the active
cell; what I want is for the active cell to be two columns to the right of
the last cell in my data table. (The data table varies in length, so it
won't always be row 1282.)

Later, I want to save the file with a new file name. The file name is a
text entry in a cell in my spreadsheet. This worked OK the first time I ran
the macro, but the next time I got a warning that the file already existed
(ie, it did not update). Here is the code that was generated; the file name
I want always resides in cell F3 of the active worksheet:

ActiveWorkbook.SaveAs Filename:= _
"C:\Documents and Settings\Nick\My Documents\UNT\Physics 6750\Data
Anlaysis\N=0,100, k=4, p=0.xls" _
, FileFormat:=xlNormal, Password:="", WriteResPassword:="", _
ReadOnlyRecommended:=False, CreateBackup:=False

Any help would be appreciated.