Project Management Database Help

[Labamba32]

Hi All,

I'm working on a tool that will help me manage project planning for my team. I have a basic sheet that looks something like this:

[TABLE="class: grid, width: 800, align: center"]
<tbody>[TR]
[TD]Task[/TD]
[TD]Time Allowed (in hours)[/TD]
[TD]Assigned to[/TD]
[TD]Start Date[/TD]
[TD]End Date[/TD]
[TD]# of Days[/TD]
[TD]1/1[/TD]
[TD]1/2[/TD]
[TD]1/3[/TD]
[TD]1/4[/TD]
[TD]1/5[/TD]
[/TR]
[TR]
[TD]A[/TD]
[TD]2[/TD]
[TD]John[/TD]
[TD]1/1[/TD]
[TD]1/2[/TD]
[TD]2[/TD]
[TD]1[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD]B[/TD]
[TD]5[/TD]
[TD]Sally[/TD]
[TD]1/2[/TD]
[TD]1/5[/TD]
[TD]4[/TD]
[TD]0[/TD]
[TD]1.25[/TD]
[TD]1.25[/TD]
[TD]1.25[/TD]
[TD]1.25[/TD]
[/TR]
[TR]
[TD]C[/TD]
[TD]1[/TD]
[TD]Mark[/TD]
[TD]1/4[/TD]
[TD]1/4[/TD]
[TD]1[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]0[/TD]
[TD]1[/TD]
[TD]0[/TD]
[/TR]
[TR]
[TD]D[/TD]
[TD]6[/TD]
[TD]John[/TD]
[TD]1/1[/TD]
[TD]1/5[/TD]
[TD]5[/TD]
[TD]1.2[/TD]
[TD]1.2[/TD]
[TD]1.2[/TD]
[TD]1.2[/TD]
[TD]1.2[/TD]
[/TR]
</tbody>[/TABLE]

The first 5 columns are hard coded in when I make my team assignments. The date columns are just straight line division of the hours allowed based on the start and end date. The formula I'm using for these columns is:

if(g1>=d2,if(g1<=e3,b2/f2,0),0))

The formulas work perfect and i have no problems with that. What I do have a problem with is excel running out of resources as my list of tasks is 30,000 long and the dates go from 1/1 to 12/31. So essentially its making 10 million calculations. I've created a work around by dividing the files into smaller parts but its cumbersome to have to open and close all these files. I've made a summary sheet that pulls in the data individually from the parted out files but its still not ideal.

Any ideas or suggestions on how i can better manage this?

Thanks