Oracle optimization HELP!!!

well...the prob is that after i installed oracle 9i...now there are 3-4 services or processes which start "automatically" when i start windows namely...

oracle.exe (150 MB of RAM!!!!)
agntsrvc.exe
apache.exe
tsnlsnr.exe

Now these files are NEEDED to log into the database for quering...so i cant just disable the automatic starting up thru services.msc cuz then every time i need to use oracle id need to start all the required services manually thru services.msc (iv tried btw)...

basically what im asking is that is there any way to create say a shortcut or script that will load the required services when i click it..cuz having a 150 mb file load up every time is a pain and starting the reqd services manually thru services.msc is a pain too...

so does anybody know any workaround...??

start>run>msconfig>start up
and un mark programs not neede to start at time of boot