I am creating a time sheet.  I need to convert a time format (7:30) to a
decimal format (7.50).  How do I do this?

I have got two sheets with names platform and participant check
In platform (colomns), I had specified the details for the training
participants like
Name, Surname, date of training, venue, etc.... It could be above 700

I have a simple spreadsheet for people to fill in for information like
supplier name, etc.  
My problem is, everyone should be putting supplier name in the exact same
way - same spelling spacing, etc...but it's not happening.  Is it possible to

Excel keeps auto-changing my formulas to include other nearby cells.  How can
I create and save a formula in a spreadsheet without the program changing my
formula?  Each day I have to correct the formula because Excel automatically
changes it.  I don't kow how to stop this from ...

When I am in a spreadsheet, I have tried typing in HDA into a cell.  When I
hit enter, it is automatically changed to HAD.  I've even tried changing the
spell check to ignore words in capital letters, but it still changes.  I've
also tried putting the ' before it, still changes.  ...

I want to calculate the number of banking days in a month, and so NETWORKDAYS
and its "holiday" argument is the relevant formula in Excel 2007.
For each date, I can use EOMONTH(date,-1) to get the start of the month date.
Try 1 Jan 2008 without any "Holiday" argument - the result ...

I have some experience of using Excel (2003), but cannot do anything other
than very simple VBA.  I have a piece of equipment (a blood glucose monitor),
which, being of US origin, displays dates as "05.22", when it means "22nd
May".  It displays times as "01:15 pm".

Is it possible to create a drop down list that shows the sheets in a workbook?

I did post a similar question yesterday but it may have been too confusing
and I did not get an answer to suit my needs.  I have decided to simplify my
question:
I have 3 columns (A, B and C), I need to add data validation to ensure dates

Can you set up Excel to popup when something is overdue a certain date?

I am trying to position datalabels on a scatter chart using Bob Bovey's XY
labeller. This puts a label on a chart for each point. Many of the labels
are sloping upwards and consequently I need the bottom left of the label
next to the point concerned. The label position is defined ...

I (sometimes) have a row with numbers from 1 to 5...
What I want is: when I enter value = 3, and that value (3) already exists in
the column, it has to correct that automatically into 4, with or without a
warning.

I'm trying to use a function (WEEKNUM) as the criteria for a range in
COUNTIF.  Is this possible?

I am looking to count a certain colored numbers in a column.
Example: All the Blue numbers, then all the Red numbers.
I looked over "Color Functions In Excel" and that didn't really seem to help.
I tried =COUNTCOLOR and it had a #NAME type error.

How can i hide / unhide error codes in a excel sheet?