Sitemap is now too large for Google

[midlandhardware]

We recently went from 37000 products to 73000 products on our site.

I generated our sitemap with 3Dcart and all is well. Once i tested it with Google tonight before resubmit i got the following error.

Google Webmaster Tools: Your Sitemap contains too many URLs. Please create multiple Sitemaps with up to 50000 URLs each and submit all Sitemaps.

To fix this i will manually create 2 sitemaps tonight.

I do not know much about .asp is there a way to have 3Dcart create two sitemaps?

sitemap.xml
sitemap2.xml