Convert summary list to detail list SQL MS Access

I am looking for an efficient way to turn:

SKU   priceshed  R1 R5   W1 W5 W10 W25 W50
1099  branch       $5         $3         2.99
1089   branch      $1  .99  .75               .69
where R1 is the retail price for 1 item, W1 is the wholsale price for 1item
And turn it into

SKU  priceshed   Rate           From      To               Price
1099  Branch     Retail             1        9999              $5
1099  Branch     Wholesale     1            9                $3
1099  Branch     Wholesale     10      9999              $2.99  
1089  Branch      Retail            1          4                  $1
1089  Branch      Retail            5        9999              $3
1089  Branch     Wholesale     1         24                 $.75
1089  Branch     Wholesale      25     9999              $.69


There will always be an R1 and W1 with any combination of the rest.
9999 is the max number on the "to" count.

Right now I am using multiple queries to accomplish this. I would like to create a VB script to do the work.  Once this conversion is complete the converted table is in the same format as the production system pricing guide and then we compare the two and make changes.  The origin format is to make it easy on the person who has to update pricing on many items relatively often.

Any ideas would be greatly appreciated.

thanks