Download manager and PDF file namer/saver - repost

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Bids
29
Avg Bid (USD)
$152
Project Budget (USD)
$30 - $250

Project Description:
I need a program written, for the Windows platform, that can take a list of URL's that create a PDF file, save that file, and name the file with the correct file name. You will need to have a delay between records built into the software that I can set, (such as 2 seconds, or 3 seconds, or 10 seconds), as it can take several seconds to create each pdf.

The software must be able to handle a URL file set of 200,000 records
The software must be able to select the source folder of the file and the output folder
The software must be able to delay between records
The software must run completely from a single folder and not need to be installed onto the computer to operate
Multi-threading is a plus, and must be a setable option


Here is an example of of the URL list that he program needs to download the PDF files:
http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=SAB4500206&brand=SIGMA

http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=348465&brand=ALDRICH

http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=658685&brand=ALDRICH

http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=398101&brand=SIAL

The file may also encounter a URL that does not make the PDF, such as this, and I need a log file that displays the failed files.:
http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=56129&brand=SUPELCO


The file name will be the productNumber and brand combined with the extension of pdf. For the above sample, the file name will be:

URL:
http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=SAB4500206&brand=SIGMA
Filename:
SAB4500206SIGMA.pdf

URL:
http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=348465&brand=ALDRICH
Filename:
348465ALDRICH.pdf

URL:
http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=658685&brand=ALDRICH
Filename:
658685ALDRICH.pdf

URL:
http://www.sigmaaldrich.com/MSDS/MSDS/DisplayMSDSPage.do?country=US&language=EN&productNumber=398101&brand=SIA
Filename:
398101SIA.pdf

Funds for the project will be placed into escrow.
Not responding to messages within 24 hours may result in the project being cancelled

Skills required:
.NET, C Programming, Data Mining, Visual Basic, Web Scraping
About the employer:
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