Desperately Trying To Build A Paid Time Off Accrual Worksheet...

I work for a company that owns hotels and casinos all over the States.

Company wide I would say we have about 13,000 employees. The hotel I work at
has around 125 employees (even w/ the constant turnover after Katrina hit).

My problem is, that my corporate office refuses to update our payroll
operations. We still use punch time cards that every other Friday I have to
manually enter time into the payroll server timesheet. Our system does not
calculate paid time off, among a lot of other things. My employees come to
me almost daily asking if I can tell them how many PTO days they have left.

The only way I have to figure it out is by going through every PTO bi-weekly
request form spreadsheet until I have added up the days taken throughout
their service year.

I am trying to build a spreadsheet in Excel 2003, that consists of:

Emp#, Name, Job Class, Hourly Rate, Hire Date, Birthdate, Last Review Date,
PTO per yr, PTO taken, PTO days left....among other personnel information.

I want to create a formula that will calculate the PTO per yr the employee
has.
After 6 months = 2 days
1 year = 10 days
2 years = 14 days
6 years = 19 days
16 years = 25 days
26 years = 30 days

(If the employee does not use the days within their service year, they loose
it.)

I also want in the PTO taken column a formula that will pull the # of days
taken from the PTO request spreadsheet that I have to send in to home office.
The employee's differ every spreadsheet, as does their placement. Once the
days taken are in their proper column, I want the PTO left to be calculated
from PTO days per year minus the days taken.