Is there a way please to lookup information from other spreadsheets based on variable information?

This is quite hard to explain so I’m just going to list out what I have below and hope that someone can make sense of what I am trying to ask!

So this is a little mock up of my scenario:

__A B C D__

1.

**PartNo Supplier Qty Discount**

2. 8888

*Vaxhaul*1

*0%*

3. 2000

*Skoda*5

*25%*

4. 1234

*Honda*3

*15%*

A2 = I type the part number in the spreadsheet here

B2 = Cell B2 then does a Vlookup based on the part number and pulls the supplier name in

C1 = I type into here the quantity of cars being purchased for example 1

D1- The complicated bit. I would like to use the quantity information in C2

**and**the supplier name in B2 to cross reference another spreadsheet which will tell me the supplier discount rate based on the number of cars that are being purchased.

For example I would like to us the value in B2 (supplier name) to locate a corresponding spreadsheet saved in C: > Supplier > Discounts > (Filename = Vaxhaul). I would then like to look up cells within this spreadsheet. This spreadsheet is very simple and looks like this.

**File Name: Vaxhaul**

__A B__

1. 1 0%

2. 2 10%

3. 3 1

*5%*

4. 4

*20%*

5. 5

*25%*

So this is where the if the quantity information in C2 matches the value in A1 to A5 you can tell the corresponding discount.

Now some of you may be reading this thinking why don’t I just do one spreadsheet on discount? The reason being is because each of our suppliers gives us different discount! So we need a way of basing the discount on which supplier is chose.

I'd be interested in hearing's peoples thoughts on this. Perhaps it is not doable? But I thought I would ask just in case!

My Excel skills are VERY BASIC, so I would refer some type of in-cell formula if this is possible? I don't understand Macros at the minute.

Thanks in advance for your comments