I read his message as the phone wouldn't see the SD card while in the ROM, can you still push to it even in the phone won't recognize it?
Don't do it from Hboot, do it from recovery.
Try this. Power off, pull the battery, batt back in, power on while holding the volume down. From the list of options one should be "recovery"...select that one. It should now boot into Amon-Ra, your recovery...black background with green type. Now you should be able to see the menu that says "mount USB". There are two options, one I think just says mount usb the other may say mount ex-usb. One is your internal SD card (HTC Storage) the ex-usb is your removable SD card...mount that one while plugged into the computer. Take the patch you've downloaded and place it on the root of the card i.e. not in a folder. Now unmount, hit the back button to get to the main menu and go to flash zip menu, then install zip from SD card, then scroll to the patch and select it, confirm it, then it will flash. Exit to the main menu and let it reboot normally into the ROM, you should be good to go.