Unfortunately, that won't work for 7750's.
Unfortunately, 7750 doesn't include a TCP/IP stack .... CDMA BlackBerries do not have a TCP/IP stack. The 7750 is also much slower than devices such as 7290 (the best BlackBerry, IMHO).
You will need to get a BES/MDS hosting service which costs about $10-$25 extra per month from a third party. This will "add" the equivalent of a TCP/IP stack to your Verizon 7750.
Alternatively, you can switch to Cingular or another service, add their $5 data plan, and get TCP/IP included, and also get a much better BlackBerry as a result. (However, Verizon may have better reception in your area, although Cingular coverage has improved significantly since 2 years ago)
Relevant articles: BlackBerry Glossary (Explains BES, MDS in English) Hosted BES FAQ (Get TCP/IP on Verizon 7750)