TjBailey10,
If I understand correctly what you want, then the walkthrough below solve the first part of your problem.
Important: make a copy of your workbook first.
Try this (note my examples below):
Sheet1
<TABLE style="BORDER-BOTTOM: #a6aab6 1px solid; BORDER-LEFT: #a6aab6 1px solid; BACKGROUND-COLOR: #ffffff; BORDER-COLLAPSE: collapse; BORDER-TOP: #a6aab6 1px solid; BORDER-RIGHT: #a6aab6 1px solid" rules=all cellPadding=2><COLGROUP><COL style="BACKGROUND-COLOR: #e0e0f0" width=25><COL><COL></COLGROUP><THEAD><TR style="TEXT-ALIGN: center; BACKGROUND-COLOR: #e0e0f0; COLOR: #161120"><TH></TH><TH>A</TH><TH>B</TH></TR></THEAD><TBODY><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">1</TD><TD style="FONT-WEIGHT: bold">OUR PART NUMBER</TD><TD style="FONT-WEIGHT: bold">SUPPLIER NUMBER</TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">2</TD><TD>YD0000012</TD><TD>132FT-D1231*SMC1</TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">3</TD><TD>YD0000013</TD><TD>132FT-D1231*SMC2</TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">4</TD><TD>YD0000014</TD><TD>132FT-D1231*SMC3</TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">5</TD><TD>YD0000015</TD><TD>132FT-D1231*SMC4</TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">6</TD><TD>YD0000016</TD><TD>132FT-D1231*SMC5</TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">7</TD><TD>YD0000017</TD><TD>132FT-D1231*SMC6</TD></TR></TBODY></TABLE>
Sheet2
<TABLE style="BORDER-BOTTOM: #a6aab6 1px solid; BORDER-LEFT: #a6aab6 1px solid; BACKGROUND-COLOR: #ffffff; BORDER-COLLAPSE: collapse; BORDER-TOP: #a6aab6 1px solid; BORDER-RIGHT: #a6aab6 1px solid" rules=all cellPadding=2><COLGROUP><COL style="BACKGROUND-COLOR: #e0e0f0" width=25><COL><COL><COL><COL></COLGROUP><THEAD><TR style="TEXT-ALIGN: center; BACKGROUND-COLOR: #e0e0f0; COLOR: #161120"><TH></TH><TH>A</TH><TH>B</TH><TH>C</TH><TH>D</TH></TR></THEAD><TBODY><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">1</TD><TD style="FONT-WEIGHT: bold">OUR PART NUMBER</TD><TD style="FONT-WEIGHT: bold">SUPPLIER NUMBER</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">2</TD><TD>YD0000012</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">3</TD><TD>YD0000013</TD><TD>132FT-D1231*SMC8</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">4</TD><TD>YD0000014</TD><TD>132FT-D1231*SMC9</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">5</TD><TD>YD0000015</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">6</TD><TD>YD0000016</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">7</TD><TD>YD0000017</TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD><TD style="TEXT-ALIGN: right"></TD></TR><TR><TD style="TEXT-ALIGN: center; COLOR: #161120">8</TD><TD></TD><TD></TD><TD></TD><TD></TD></TR></TBODY></TABLE>
Before started, sort the two list by the field OUR PART NUMBER (Sheet1 and Sheet2) if necessary:
1. On Sheet2, copy the label from B1 to cell D1.
2. (Excel 2007) Still with Sheet2 selected, make active the Data tab and choose the Advanced command in the Sort & Filter group.
2. (Excel 2003) Still with Sheet2 selected, open the Data menu, point to Filter, and choose the Advanced Filter command.
3. In the Advanced Filter dialog box, choose the option Copy to another location and make the following changes in the text boxes of the respective dialog box:
List range: select the range A1:B7 on Sheet1.
Criteria range: select the range A1:A7 on Sheet2.
Copy to: Select cell D1 in Sheet2.
4. Now, click OK.
5. Select the region B1:B7 in Sheet2 and choose the Copy command.
6. Select the range D1:D7 in Sheet2 and choose the Paste Special command, enable the option Ignore blank and click OK.
7. Now, copy the range D1:D7 to B1:B7.
8. Finally, delete the column D.
As for your second request (supplier number wrong) I need more information (give us examples).
Markmzz