Hi xjr328:
Glad to hear you found an alternate download site, but please proceed with caution. HerdProtect has flagged downloadsource.net for bundling trojans and other malware with their installers - see their site analysis for downloadsource.net here.
Before you run this installer, I'd suggest that you submit it for a SHA256 hash analysis at VirusTotal (assuming the file doesn't exceed the max file size of 64 MB). A high detection rate with VirusTotal would indicate that a wide variety of AV software considers the installer to be unsafe/malicious.
If VirusTotal reports the file is safe and you decide to continue with the installation, be sure that you click any Custom or Advanced buttons on the installation wizard and decline all bundled browser toolbars, etc. that might try attempt to install PUPs (potentially unwanted programs) like adware or browsers hijackers on your system. After SystemWorks is reinstalled a full system scan with the free version of Malwarebytes Anti-Malware would also be prudent.
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MS Windows 32-bit Vista Home Premium SP2 * Firefox 30.0 * IE 9.0 * NIS 2013 v. 20.5.0.28 * MBAM PRO 1.75.1300
HP Pavilion dv6835ca, Intel Core2Duo CPU T5550 @ 1.83 GHz, 3.0 GB RAM, NVIDIA GeForce 8400M GS