Blocked by company resources = you're screwed.
Unless you have a viable reason to access this site and its forums. If IT does not know about it, make your case to your superior and hope for the best.
If it does not work by respecting the hierarchical procedure, it will certainly not get better if you get caught trying to cheat the system (grounds for dismissal, if I'm not mistaken).
Besides, you can circumvent Websense at the sole condition that it has been poorly configured or incorrectly installed.
If it is properly installed and configured, all attempts to cheat will simply appear in the log and you will end up nailed to the wall.
Do not forget one thing : if your company has decided to purchase and use such a product, that means that there is a witch-hunter somewhere who is on the warpath and wants blood. If you stick your neck up gratuitiously, he will be only too happy to lop it off.
In the company I work at at the moment, there is a firewall and there are logging tools, but nothing is blocked and the surveillance is quite lax. The principle being that management trusts the employees to get the work done on time and correctly. Outside of that, nobody considers that surfing the web is a problem, as long as the work is done.
Which is nice.